Most Common Car Issues

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Engine Number of Cylinders
6
Model
Defender

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MOST COMMON PROBLEMS

LAND ROVER Defender 2022

The 2022 Land Rover Defender 110 X-Dynamic SE is a versatile and robust multipurpose passenger vehicle, equipped with a 3.0L inline-six engine producing 395 hp. This all-wheel-drive SUV ensures safety with standard features like Lane Departure Warning, Forward Collision Warning, and Blind Spot Warning. It combines luxury and technology with its mild hybrid system and modern conveniences such as keyless ignition and an automatic transmission with eight speeds. Built in Slovakia by Jaguar Land Rover Limited, the Defender offers a well-rounded package for both off-road adventures and urban driving.

Spec:

Engine Brake (hp) From
395
Engine Configuration
In-Line
Engine Model
AJ120
Engine Number of Cylinders
6

Problems:

Oil leaks
Due to the in-line configuration and potential gasket issues, oil leaks can commonly occur, leading to reduced performance and potential engine damage if not addressed promptly.
Overheating
The AJ120 engine, while powerful, may experience cooling system inefficiencies, particularly if the radiator or coolant passages are blocked or if the coolant level is low.
Timing chain problems
The 6-cylinder AJ120 engine may experience timing chain wear or stretching, which can lead to poor engine performance or even catastrophic engine failure if the chain skips a tooth or breaks.
Turbocharger issues
If the Defender model with the AJ120 engine is equipped with a turbocharger, there can be issues with turbo lag, oil supply, or turbo failure due to high stress and heat.
Fuel injector problems
The in-line 6-cylinder configuration may face fuel injector issues, such as clogging or leakage, which can affect engine performance and fuel efficiency.
Sensor failures
Modern engines like the AJ120 are equipped with numerous sensors. Failures in oxygen sensors, mass airflow sensors, or crankshaft position sensors can lead to poor engine performance and diagnostic challenges.
Carbon buildup
Direct injection engines like the AJ120 can suffer from carbon buildup on intake valves, leading to reduced airflow and performance over time.
Exhaust gas recirculation (egr) valve issues
Problems with the EGR valve can lead to poor emissions performance and engine knocking, affecting the overall engine efficiency and compliance with emission standards.
LAND ROVER Defender 2020

The 2020 Land Rover 110 X is a versatile multipurpose passenger vehicle that seats seven and is powered by a 3.0L AJ120 i6 engine delivering 395 hp. With a robust suite of safety features including Dynamic Brake Support, Lane Departure Warning, Forward Collision Warning, and Pedestrian Automatic Emergency Braking, it ensures a secure ride. The vehicle boasts an 8-speed automatic transmission, all-wheel drive, and a mild hybrid electric system. Its luxurious base price of $80,900 reflects its premium build and comprehensive features.

Spec:

Dynamic Brake Support (DBS)
Standard
Engine Brake (hp) From
395
Engine Configuration
In-Line
Engine Model
AJ120 i6
Engine Number of Cylinders
6

Problems:

Dynamic brake support malfunction
The Dynamic Brake Support system may fail to activate or deactivate properly, leading to potential safety issues.
Excessive engine noise
The AJ120 i6 engine might produce excessive noise due to mechanical issues or improper maintenance.
Oil leaks
The in-line 6-cylinder engine can develop oil leaks, especially around gaskets and seals, which could lead to engine damage if not addressed.
Turbocharger failure
If equipped with a turbocharger, the engine may experience turbocharger failure due to wear and tear or lack of maintenance.
Cooling system problems
The engine may overheat due to issues with the cooling system, such as a failing water pump, radiator, or thermostat.
Fuel system issues
Problems with the fuel injectors or fuel pump can lead to poor engine performance or starting issues.
Timing chain wear
The timing chain in the AJ120 i6 engine can wear out over time, potentially leading to timing issues and engine damage.
Electrical problems
The engine's electrical components, such as sensors and wiring, might fail, leading to various engine performance issues.
LAND ROVER Defender 2023

The 2023 Land Rover Defender 90 X-Dynamic SE is a powerhouse with its 3.0L AJ120 engine delivering 395 hp. This AWD SUV boasts advanced safety features like Dynamic Brake Support, Lane Departure Warning, and Blind Spot Intervention. It integrates modern tech such as Adaptive Driving Beam and a backup camera, ensuring both performance and safety. With a mild hybrid system and a robust design, it's ready for any adventure.

Spec:

Dynamic Brake Support (DBS)
Standard
Engine Brake (hp) From
395
Engine Configuration
In-Line
Engine Model
AJ120
Engine Number of Cylinders
6

Problems:

Engine misfire
An engine misfire can occur due to issues with the ignition system, fuel system, or engine compression, leading to poor engine performance.
Turbocharger failure
Turbocharger problems can result in a loss of power and efficiency, often caused by oil contamination, wear and tear, or foreign objects damaging the turbine.
Oil leaks
Oil leaks can stem from various points in the engine, such as gaskets, seals, or oil pan, leading to oil loss and potential engine damage.
Overheating
Overheating issues can arise from coolant leaks, a faulty thermostat, a failing water pump, or a clogged radiator, potentially causing severe engine damage.
Timing chain/belt problems
A worn or broken timing chain/belt can lead to improper engine timing, causing poor performance or even engine damage.
Fuel injector issues
Faulty fuel injectors can result in poor fuel delivery, leading to reduced engine performance, increased emissions, and potential engine damage.
Sensor failures
Malfunctioning sensors, such as the oxygen sensor or mass airflow sensor, can cause incorrect air-fuel mixture, leading to poor engine performance and increased emissions.
Dpf (diesel particulate filter) clogging
For diesel engines, the DPF can become clogged, causing increased exhaust backpressure, reduced performance, and potential engine damage.
Exhaust gas recirculation (egr) valve issues
A malfunctioning EGR valve can cause poor engine performance, increased emissions, and potential engine damage due to improper exhaust gas recirculation.
LAND ROVER Defender 2021

The 2021 Land Rover Defender 110 SE is a versatile and robust all-wheel-drive SUV featuring a 395-hp AJ120 i6 engine with a 3.0L displacement and mild hybrid electric capabilities. Safety is paramount with standard features such as Dynamic Brake Support, Lane Departure Warning, Forward Collision Warning, and Blind Spot Intervention. The vehicle comfortably seats five across two rows and includes advanced amenities like a backup camera, keyless ignition, and electronic stability control. Manufactured in Nitra, Slovakia, this model emphasizes both performance and luxury.

Spec:

Dynamic Brake Support (DBS)
Standard
Engine Brake (hp) From
395
Engine Configuration
In-Line
Engine Model
AJ120 i6
Engine Number of Cylinders
6

Problems:

Dynamic brake support (dbs) malfunction
DBS is designed to assist in emergency braking situations. If it malfunctions, it can result in reduced braking efficiency and longer stopping distances.
Engine overheating
The AJ120 i6 engine configuration, especially with 395 hp, may be prone to overheating if not properly maintained, leading to potential engine damage.
Cylinder misfire
With 6 cylinders, if one misfires, it can cause rough idling, reduced power, and increased fuel consumption.
Turbocharger issues
High-performance engines like the AJ120 i6 often use turbochargers. Failure in the turbocharger can lead to a significant loss of power and performance.
Oil leaks
In-line 6 engines are sometimes prone to oil leaks, which can cause engine damage if not addressed promptly.
Timing chain problems
Timing chain issues can lead to poor engine performance or even engine failure if the chain breaks.
Fuel system malfunctions
Issues with fuel injectors or fuel pumps can lead to poor engine performance, stalling, or failure to start.
Electrical problems
Modern engines with advanced electronic control units (ECUs) can face various electrical issues, affecting engine performance and reliability.
LAND ROVER Defender 2020

The 2020 Land Rover 110 X is a versatile and luxurious multipurpose passenger vehicle (MPV) designed for both comfort and safety. Equipped with a powerful 3.0L AJ120 i6 engine that delivers 395 horsepower, it features standard all-wheel drive, Dynamic Brake Support (DBS), and a host of advanced safety technologies such as Lane Departure Warning (LDW), Forward Collision Warning (FCW), and Adaptive Cruise Control (ACC). This 7-seater vehicle also includes modern conveniences like a backup camera, Blind Spot Warning (BSW), and 20-inch wheels. Priced at $80,900, it offers a premium driving experience with a focus on both performance and passenger protection.

Spec:

Dynamic Brake Support (DBS)
Standard
Engine Brake (hp) From
395
Engine Configuration
In-Line
Engine Model
AJ120 i6
Engine Number of Cylinders
6

Problems:

Dynamic brake support malfunction
The Dynamic Brake Support system may fail to activate or deactivate properly, leading to potential safety issues.
Excessive engine noise
The AJ120 i6 engine might produce excessive noise due to mechanical issues or improper maintenance.
Oil leaks
The in-line 6-cylinder engine can develop oil leaks, especially around gaskets and seals, which could lead to engine damage if not addressed.
Turbocharger failure
If equipped with a turbocharger, the engine may experience turbocharger failure due to wear and tear or lack of maintenance.
Cooling system problems
The engine may overheat due to issues with the cooling system, such as a failing water pump, radiator, or thermostat.
Fuel system issues
Problems with the fuel injectors or fuel pump can lead to poor engine performance or starting issues.
Timing chain wear
The timing chain in the AJ120 i6 engine can wear out over time, potentially leading to timing issues and engine damage.
Electrical problems
The engine's electrical components, such as sensors and wiring, might fail, leading to various engine performance issues.
LAND ROVER Defender 2021

The 2021 Land Rover Defender 110 X-Dynamic SE is an advanced multipurpose passenger vehicle featuring a 3.0L AJ120 i6 engine with 395 hp and mild hybrid electric vehicle technology. It offers a comprehensive suite of safety features including Dynamic Brake Support, Lane Departure Warning, Forward Collision Warning, and Blind Spot Warning. With a seating capacity for five and all-wheel drive, this SUV ensures both comfort and performance. Built in Nitra, Slovakia, it is equipped with modern amenities such as keyless ignition, LED headlamps, and a backup camera.

Spec:

Dynamic Brake Support (DBS)
Standard
Engine Brake (hp) From
395
Engine Configuration
In-Line
Engine Model
AJ120 i6
Engine Number of Cylinders
6

Problems:

Dynamic brake support (dbs) malfunction
DBS is designed to assist in emergency braking situations. If it malfunctions, it can result in reduced braking efficiency and longer stopping distances.
Engine overheating
The AJ120 i6 engine configuration, especially with 395 hp, may be prone to overheating if not properly maintained, leading to potential engine damage.
Cylinder misfire
With 6 cylinders, if one misfires, it can cause rough idling, reduced power, and increased fuel consumption.
Turbocharger issues
High-performance engines like the AJ120 i6 often use turbochargers. Failure in the turbocharger can lead to a significant loss of power and performance.
Oil leaks
In-line 6 engines are sometimes prone to oil leaks, which can cause engine damage if not addressed promptly.
Timing chain problems
Timing chain issues can lead to poor engine performance or even engine failure if the chain breaks.
Fuel system malfunctions
Issues with fuel injectors or fuel pumps can lead to poor engine performance, stalling, or failure to start.
Electrical problems
Modern engines with advanced electronic control units (ECUs) can face various electrical issues, affecting engine performance and reliability.
LAND ROVER Defender 2023

The 2023 Land Rover Defender 110 SE is a versatile and robust SUV with a 3.0L AJ120 inline-six engine producing 395 hp. It features a comprehensive suite of safety technologies, including Dynamic Brake Support, Lane Departure Warning, and Forward Collision Warning. The vehicle also incorporates advanced driver assistance systems such as Adaptive Driving Beam and Blind Spot Warning. With a mild hybrid electric system and standard AWD, this model ensures both efficiency and performance.

Spec:

Dynamic Brake Support (DBS)
Standard
Engine Brake (hp) From
395
Engine Configuration
In-Line
Engine Model
AJ120
Engine Number of Cylinders
6

Problems:

Engine misfire
An engine misfire can occur due to issues with the ignition system, fuel system, or engine compression, leading to poor engine performance.
Turbocharger failure
Turbocharger problems can result in a loss of power and efficiency, often caused by oil contamination, wear and tear, or foreign objects damaging the turbine.
Oil leaks
Oil leaks can stem from various points in the engine, such as gaskets, seals, or oil pan, leading to oil loss and potential engine damage.
Overheating
Overheating issues can arise from coolant leaks, a faulty thermostat, a failing water pump, or a clogged radiator, potentially causing severe engine damage.
Timing chain/belt problems
A worn or broken timing chain/belt can lead to improper engine timing, causing poor performance or even engine damage.
Fuel injector issues
Faulty fuel injectors can result in poor fuel delivery, leading to reduced engine performance, increased emissions, and potential engine damage.
Sensor failures
Malfunctioning sensors, such as the oxygen sensor or mass airflow sensor, can cause incorrect air-fuel mixture, leading to poor engine performance and increased emissions.
Dpf (diesel particulate filter) clogging
For diesel engines, the DPF can become clogged, causing increased exhaust backpressure, reduced performance, and potential engine damage.
Exhaust gas recirculation (egr) valve issues
A malfunctioning EGR valve can cause poor engine performance, increased emissions, and potential engine damage due to improper exhaust gas recirculation.
LAND ROVER Defender 2022

The 2022 Land Rover Defender 110 X-Dynamic SE is a versatile SUV with a 3.0L inline-six engine producing 395 hp. It features advanced safety technologies like Lane Departure Warning, Forward Collision Warning, and Blind Spot Warning. This AWD vehicle also boasts a mild hybrid electric system and an 8-speed automatic transmission. Built in Nitra, Slovakia, it emphasizes both performance and safety with standard features such as LED headlamps and multiple airbag locations across all three rows.

Spec:

Engine Brake (hp) From
395
Engine Configuration
In-Line
Engine Model
AJ120
Engine Number of Cylinders
6

Problems:

Oil leaks
Due to the in-line configuration and potential gasket issues, oil leaks can commonly occur, leading to reduced performance and potential engine damage if not addressed promptly.
Overheating
The AJ120 engine, while powerful, may experience cooling system inefficiencies, particularly if the radiator or coolant passages are blocked or if the coolant level is low.
Timing chain problems
The 6-cylinder AJ120 engine may experience timing chain wear or stretching, which can lead to poor engine performance or even catastrophic engine failure if the chain skips a tooth or breaks.
Turbocharger issues
If the Defender model with the AJ120 engine is equipped with a turbocharger, there can be issues with turbo lag, oil supply, or turbo failure due to high stress and heat.
Fuel injector problems
The in-line 6-cylinder configuration may face fuel injector issues, such as clogging or leakage, which can affect engine performance and fuel efficiency.
Sensor failures
Modern engines like the AJ120 are equipped with numerous sensors. Failures in oxygen sensors, mass airflow sensors, or crankshaft position sensors can lead to poor engine performance and diagnostic challenges.
Carbon buildup
Direct injection engines like the AJ120 can suffer from carbon buildup on intake valves, leading to reduced airflow and performance over time.
Exhaust gas recirculation (egr) valve issues
Problems with the EGR valve can lead to poor emissions performance and engine knocking, affecting the overall engine efficiency and compliance with emission standards.
LAND ROVER Defender 2020

The 2020 Land Rover 110 SE is a versatile multipurpose passenger vehicle (MPV) with a robust 3.0-liter in-line six-cylinder engine delivering 395 hp. It boasts advanced safety features including Dynamic Brake Support (DBS), Lane Departure Warning (LDW), and Forward Collision Warning (FCW). With seating for six and standard all-wheel drive (AWD), it ensures both comfort and control. The vehicle comes with a host of standard features such as a backup camera, blind spot warning, and LED headlamps, all starting at a base price of $62,250.

Spec:

Dynamic Brake Support (DBS)
Standard
Engine Brake (hp) From
395
Engine Configuration
In-Line
Engine Model
AJ120 i6 MHEV
Engine Number of Cylinders
6

Problems:

Dynamic brake support (dbs)
Although generally reliable, the DBS system can sometimes malfunction due to sensor issues or software glitches, leading to unexpected braking behavior or failure to activate when needed.
Engine overheating
The in-line 6-cylinder AJ120 i6 MHEV engine can be prone to overheating if the cooling system is not properly maintained. This can be due to coolant leaks, faulty thermostats, or radiator issues.
Turbocharger problems
Turbochargers in these engines can sometimes fail or underperform, leading to loss of power, increased fuel consumption, and excessive smoke from the exhaust.
Timing chain issues
The timing chain in the AJ120 i6 MHEV engine can stretch or wear out over time, causing the engine to run poorly and potentially leading to more serious damage if not addressed.
Oil leaks
Common in many Land Rover models, oil leaks can occur around the valve cover gasket, oil pan gasket, or other seals, leading to a drop in oil levels and potential engine damage.
Electrical issues
The 2020 Land Rover Defender's electrical system, including the DBS, can sometimes experience faults, leading to problems with starting, dashboard warnings, or erratic behavior of electronic components.
Fuel system problems
Issues with the fuel injectors or fuel pump can lead to poor engine performance, misfires, or difficulty starting the vehicle.
Exhaust gas recirculation (egr) valve issues
The EGR valve can become clogged or fail, leading to increased emissions, reduced fuel efficiency, and poor engine performance.
Transmission problems
Particularly in automatic models, transmission issues such as hard shifting, slipping, or delayed engagement can occur, often due to software issues or mechanical wear.
Suspension wear
The suspension components on the 2020 Defender can wear out prematurely, leading to a rough ride, poor handling, and increased tire wear.
LAND ROVER Defender 2022

The 2022 Land Rover Defender 110 SE is a sophisticated SUV equipped with a 3.0-liter, 395 hp AJ120 inline-6 engine and an 8-speed automatic transmission. It features advanced safety systems such as Lane Departure Warning, Forward Collision Warning, and Blind Spot Warning, all standard. This all-wheel-drive vehicle also includes modern amenities like LED headlamps, a backup camera, and keyless ignition. Built in Nitra, Slovakia, it boasts a mild hybrid electric system and comprehensive airbag coverage across the first and second rows.

Spec:

Engine Brake (hp) From
395
Engine Configuration
In-Line
Engine Model
AJ120
Engine Number of Cylinders
6

Problems:

Oil leaks
Due to the in-line configuration and potential gasket issues, oil leaks can commonly occur, leading to reduced performance and potential engine damage if not addressed promptly.
Overheating
The AJ120 engine, while powerful, may experience cooling system inefficiencies, particularly if the radiator or coolant passages are blocked or if the coolant level is low.
Timing chain problems
The 6-cylinder AJ120 engine may experience timing chain wear or stretching, which can lead to poor engine performance or even catastrophic engine failure if the chain skips a tooth or breaks.
Turbocharger issues
If the Defender model with the AJ120 engine is equipped with a turbocharger, there can be issues with turbo lag, oil supply, or turbo failure due to high stress and heat.
Fuel injector problems
The in-line 6-cylinder configuration may face fuel injector issues, such as clogging or leakage, which can affect engine performance and fuel efficiency.
Sensor failures
Modern engines like the AJ120 are equipped with numerous sensors. Failures in oxygen sensors, mass airflow sensors, or crankshaft position sensors can lead to poor engine performance and diagnostic challenges.
Carbon buildup
Direct injection engines like the AJ120 can suffer from carbon buildup on intake valves, leading to reduced airflow and performance over time.
Exhaust gas recirculation (egr) valve issues
Problems with the EGR valve can lead to poor emissions performance and engine knocking, affecting the overall engine efficiency and compliance with emission standards.
LAND ROVER Defender 2023

The 2023 Land Rover Defender 130 First Edition is a versatile and robust SUV equipped with a 3.0L AJ120 inline-six engine producing 395 hp. It features a comprehensive suite of safety technologies, including Dynamic Brake Support, Lane Departure Warning, Blind Spot Warning, and Forward Collision Warning. This all-wheel-drive vehicle also incorporates mild hybrid electric technology for improved efficiency. With standard features like a backup camera, keyless ignition, and adaptive driving beam, it delivers both performance and convenience.

Spec:

Dynamic Brake Support (DBS)
Standard
Engine Brake (hp) From
395
Engine Configuration
In-Line
Engine Model
AJ120
Engine Number of Cylinders
6

Problems:

Engine misfire
An engine misfire can occur due to issues with the ignition system, fuel system, or engine compression, leading to poor engine performance.
Turbocharger failure
Turbocharger problems can result in a loss of power and efficiency, often caused by oil contamination, wear and tear, or foreign objects damaging the turbine.
Oil leaks
Oil leaks can stem from various points in the engine, such as gaskets, seals, or oil pan, leading to oil loss and potential engine damage.
Overheating
Overheating issues can arise from coolant leaks, a faulty thermostat, a failing water pump, or a clogged radiator, potentially causing severe engine damage.
Timing chain/belt problems
A worn or broken timing chain/belt can lead to improper engine timing, causing poor performance or even engine damage.
Fuel injector issues
Faulty fuel injectors can result in poor fuel delivery, leading to reduced engine performance, increased emissions, and potential engine damage.
Sensor failures
Malfunctioning sensors, such as the oxygen sensor or mass airflow sensor, can cause incorrect air-fuel mixture, leading to poor engine performance and increased emissions.
Dpf (diesel particulate filter) clogging
For diesel engines, the DPF can become clogged, causing increased exhaust backpressure, reduced performance, and potential engine damage.
Exhaust gas recirculation (egr) valve issues
A malfunctioning EGR valve can cause poor engine performance, increased emissions, and potential engine damage due to improper exhaust gas recirculation.
LAND ROVER Defender 2022

The 2022 Land Rover Defender 110 SE is a versatile multipurpose passenger vehicle with a 3.0L inline-six engine producing 395 hp. This AWD SUV comes with advanced safety features including standard lane departure warning, forward collision warning, and blind spot warning. The vehicle also boasts a mild hybrid electric system, LED headlamps, and an 8-speed automatic transmission. Built in Nitra, Slovakia by Jaguar Land Rover Limited, it offers comprehensive airbag coverage across all rows and sophisticated electronic stability control.

Spec:

Engine Brake (hp) From
395
Engine Configuration
In-Line
Engine Model
AJ120
Engine Number of Cylinders
6

Problems:

Oil leaks
Due to the in-line configuration and potential gasket issues, oil leaks can commonly occur, leading to reduced performance and potential engine damage if not addressed promptly.
Overheating
The AJ120 engine, while powerful, may experience cooling system inefficiencies, particularly if the radiator or coolant passages are blocked or if the coolant level is low.
Timing chain problems
The 6-cylinder AJ120 engine may experience timing chain wear or stretching, which can lead to poor engine performance or even catastrophic engine failure if the chain skips a tooth or breaks.
Turbocharger issues
If the Defender model with the AJ120 engine is equipped with a turbocharger, there can be issues with turbo lag, oil supply, or turbo failure due to high stress and heat.
Fuel injector problems
The in-line 6-cylinder configuration may face fuel injector issues, such as clogging or leakage, which can affect engine performance and fuel efficiency.
Sensor failures
Modern engines like the AJ120 are equipped with numerous sensors. Failures in oxygen sensors, mass airflow sensors, or crankshaft position sensors can lead to poor engine performance and diagnostic challenges.
Carbon buildup
Direct injection engines like the AJ120 can suffer from carbon buildup on intake valves, leading to reduced airflow and performance over time.
Exhaust gas recirculation (egr) valve issues
Problems with the EGR valve can lead to poor emissions performance and engine knocking, affecting the overall engine efficiency and compliance with emission standards.
LAND ROVER Defender 2022

The 2022 Land Rover Defender 110 X-Dynamic HSE is a versatile and advanced SUV. It features a 3.0L AJ120 engine with 395 hp, AWD, and an 8-speed automatic transmission. Safety systems include standard LDW, FCW, ACC, PAEB, BSW, and more. This mild hybrid vehicle also offers luxurious touches with keyless ignition and LED headlamps.

Spec:

Engine Brake (hp) From
395
Engine Configuration
In-Line
Engine Model
AJ120
Engine Number of Cylinders
6

Problems:

Oil leaks
Due to the in-line configuration and potential gasket issues, oil leaks can commonly occur, leading to reduced performance and potential engine damage if not addressed promptly.
Overheating
The AJ120 engine, while powerful, may experience cooling system inefficiencies, particularly if the radiator or coolant passages are blocked or if the coolant level is low.
Timing chain problems
The 6-cylinder AJ120 engine may experience timing chain wear or stretching, which can lead to poor engine performance or even catastrophic engine failure if the chain skips a tooth or breaks.
Turbocharger issues
If the Defender model with the AJ120 engine is equipped with a turbocharger, there can be issues with turbo lag, oil supply, or turbo failure due to high stress and heat.
Fuel injector problems
The in-line 6-cylinder configuration may face fuel injector issues, such as clogging or leakage, which can affect engine performance and fuel efficiency.
Sensor failures
Modern engines like the AJ120 are equipped with numerous sensors. Failures in oxygen sensors, mass airflow sensors, or crankshaft position sensors can lead to poor engine performance and diagnostic challenges.
Carbon buildup
Direct injection engines like the AJ120 can suffer from carbon buildup on intake valves, leading to reduced airflow and performance over time.
Exhaust gas recirculation (egr) valve issues
Problems with the EGR valve can lead to poor emissions performance and engine knocking, affecting the overall engine efficiency and compliance with emission standards.
LAND ROVER Defender 2021

The 2021 Land Rover Defender 110 X-Dynamic HSE is a versatile and robust SUV equipped with a 3.0L AJ120 i6 engine producing 395 hp. It features advanced safety technologies such as Dynamic Brake Support, Lane Departure Warning, Forward Collision Warning, and Blind Spot Warning. The vehicle offers a comfortable ride with seating for 5 and modern conveniences like Keyless Ignition, Backup Camera, and LED Headlamps. It's a mild hybrid electric vehicle with AWD, ensuring excellent traction and stability on diverse terrains.

Spec:

Dynamic Brake Support (DBS)
Standard
Engine Brake (hp) From
395
Engine Configuration
In-Line
Engine Model
AJ120 i6
Engine Number of Cylinders
6

Problems:

Dynamic brake support (dbs) malfunction
DBS is designed to assist in emergency braking situations. If it malfunctions, it can result in reduced braking efficiency and longer stopping distances.
Engine overheating
The AJ120 i6 engine configuration, especially with 395 hp, may be prone to overheating if not properly maintained, leading to potential engine damage.
Cylinder misfire
With 6 cylinders, if one misfires, it can cause rough idling, reduced power, and increased fuel consumption.
Turbocharger issues
High-performance engines like the AJ120 i6 often use turbochargers. Failure in the turbocharger can lead to a significant loss of power and performance.
Oil leaks
In-line 6 engines are sometimes prone to oil leaks, which can cause engine damage if not addressed promptly.
Timing chain problems
Timing chain issues can lead to poor engine performance or even engine failure if the chain breaks.
Fuel system malfunctions
Issues with fuel injectors or fuel pumps can lead to poor engine performance, stalling, or failure to start.
Electrical problems
Modern engines with advanced electronic control units (ECUs) can face various electrical issues, affecting engine performance and reliability.
LAND ROVER Defender 2022

The 2022 Land Rover Defender 110 X-Dynamic HSE is a versatile and robust MPV with a 3.0L AJ120 in-line 6-cylinder engine producing 395 hp. It features advanced safety technologies like Lane Departure Warning, Forward Collision Warning, and Pedestrian Automatic Emergency Braking. The vehicle boasts comprehensive driver assistance systems, including Adaptive Cruise Control and Blind Spot Warning. With AWD, LED headlamps, and mild hybrid electrification, it's equipped for both rugged terrains and urban environments.

Spec:

Engine Brake (hp) From
395
Engine Configuration
In-Line
Engine Model
AJ120
Engine Number of Cylinders
6

Problems:

Oil leaks
Due to the in-line configuration and potential gasket issues, oil leaks can commonly occur, leading to reduced performance and potential engine damage if not addressed promptly.
Overheating
The AJ120 engine, while powerful, may experience cooling system inefficiencies, particularly if the radiator or coolant passages are blocked or if the coolant level is low.
Timing chain problems
The 6-cylinder AJ120 engine may experience timing chain wear or stretching, which can lead to poor engine performance or even catastrophic engine failure if the chain skips a tooth or breaks.
Turbocharger issues
If the Defender model with the AJ120 engine is equipped with a turbocharger, there can be issues with turbo lag, oil supply, or turbo failure due to high stress and heat.
Fuel injector problems
The in-line 6-cylinder configuration may face fuel injector issues, such as clogging or leakage, which can affect engine performance and fuel efficiency.
Sensor failures
Modern engines like the AJ120 are equipped with numerous sensors. Failures in oxygen sensors, mass airflow sensors, or crankshaft position sensors can lead to poor engine performance and diagnostic challenges.
Carbon buildup
Direct injection engines like the AJ120 can suffer from carbon buildup on intake valves, leading to reduced airflow and performance over time.
Exhaust gas recirculation (egr) valve issues
Problems with the EGR valve can lead to poor emissions performance and engine knocking, affecting the overall engine efficiency and compliance with emission standards.
LAND ROVER Defender 2022

The 2022 Land Rover Defender 110 X-Dynamic SE is a highly capable SUV powered by a 3.0L AJ120 in-line six-cylinder engine producing 395 hp. This AWD vehicle is equipped with advanced safety features including Lane Departure Warning, Forward Collision Warning, and Pedestrian Automatic Emergency Braking. The Defender also offers a mild hybrid electric system and a suite of driver-assist technologies like Blind Spot Warning and Rear Cross Traffic Alert. Built in Nitra, Slovakia, it boasts a robust design with a gross vehicle weight rating of up to 7,000 lbs.

Spec:

Engine Brake (hp) From
395
Engine Configuration
In-Line
Engine Model
AJ120
Engine Number of Cylinders
6

Problems:

Oil leaks
Due to the in-line configuration and potential gasket issues, oil leaks can commonly occur, leading to reduced performance and potential engine damage if not addressed promptly.
Overheating
The AJ120 engine, while powerful, may experience cooling system inefficiencies, particularly if the radiator or coolant passages are blocked or if the coolant level is low.
Timing chain problems
The 6-cylinder AJ120 engine may experience timing chain wear or stretching, which can lead to poor engine performance or even catastrophic engine failure if the chain skips a tooth or breaks.
Turbocharger issues
If the Defender model with the AJ120 engine is equipped with a turbocharger, there can be issues with turbo lag, oil supply, or turbo failure due to high stress and heat.
Fuel injector problems
The in-line 6-cylinder configuration may face fuel injector issues, such as clogging or leakage, which can affect engine performance and fuel efficiency.
Sensor failures
Modern engines like the AJ120 are equipped with numerous sensors. Failures in oxygen sensors, mass airflow sensors, or crankshaft position sensors can lead to poor engine performance and diagnostic challenges.
Carbon buildup
Direct injection engines like the AJ120 can suffer from carbon buildup on intake valves, leading to reduced airflow and performance over time.
Exhaust gas recirculation (egr) valve issues
Problems with the EGR valve can lead to poor emissions performance and engine knocking, affecting the overall engine efficiency and compliance with emission standards.
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