Most Common Car Issues

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Make
GENESIS
Model
G90

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MOST COMMON PROBLEMS

GENESIS G90 2020

The 2020 Genesis G90 5.0 Ultimate is a luxurious rear-wheel-drive sedan powered by a robust 5.0L GDI-TAU V8 engine producing 420 hp. It features a range of advanced safety systems, including standard Dynamic Brake Support (DBS), ABS, Traction Control, and multiple airbags. Comfortably seating five, this elegant sedan also includes modern conveniences like a backup camera, TPMS, and an 8-speed automatic transmission. Built in Ulsan, South Korea, it exemplifies Hyundai Motor Co's commitment to luxury and performance.

Spec:

Dynamic Brake Support (DBS)
Standard
Engine Brake (hp) From
420
Engine Model
GDI-TAU
Engine Number of Cylinders
8

Problems:

Dynamic brake support malfunction
The Dynamic Brake Support system may fail to engage properly, leading to reduced braking efficiency or delayed response during emergency braking situations.
Engine misfire
The GDI-TAU engine, with its 8 cylinders, might experience misfires due to issues with spark plugs, ignition coils, or fuel injectors.
Oil consumption
This engine model may have higher oil consumption, often due to piston ring wear or valve seal issues, requiring frequent oil top-ups.
Turbocharger problems
If this engine is turbocharged, it may face issues like turbo lag, bearing wear, or oil leaks, leading to reduced performance.
Fuel injector issues
GDI engines are prone to clogging or failure of fuel injectors, which can cause poor fuel economy, rough idling, or starting problems.
Timing chain wear
Over time, the timing chain can stretch or wear out, causing poor engine performance or even engine failure if not addressed.
Cooling system failures
The engine may experience overheating due to issues with the radiator, water pump, or coolant leaks.
Transmission problems
Although not directly an engine issue, the transmission linked with this engine may face issues like slipping, harsh shifts, or failure, affecting overall vehicle performance.
Vibration or rough idle
The V8 engine may develop issues causing vibrations or rough idling, often due to engine mounts, balance issues, or misfiring cylinders.
Check engine light
Various sensor or electronic control unit (ECU) issues can trigger the check engine light, necessitating diagnostic checks to pinpoint the exact problem.
GENESIS G90 2017

The 2017 Genesis G90 5.0 Ultimate is a luxurious sedan powered by a 5.0L V8 engine from Hyundai Motor Co., delivering 420 hp. This South Korean-built vehicle features comprehensive safety with airbags in the first and second rows, including knee and side airbags. Its elegant design is matched with advanced engineering, making it a standout in the premium sedan category.

Spec:

Engine Brake (hp) From
420
Engine Manufacturer
HMC
Engine Model
GDI TAU
Engine Number of Cylinders
8

Problems:

Oil consumption
Higher oil consumption can occur due to worn piston rings or valve seals, leading to frequent oil top-ups.
Engine knocking
This can be caused by using lower octane fuel than recommended, carbon buildup, or issues with the timing.
Fuel injector issues
Dirty or clogged fuel injectors can lead to poor fuel economy and misfires.
Timing chain/belt problems
Timing chain or belt wear can cause engine performance issues and, if not addressed, severe engine damage.
Cooling system failures
Problems with the radiator, water pump, or thermostat can cause the engine to overheat.
Misfires
Misfires can be caused by faulty spark plugs, ignition coils, or fuel delivery issues.
Sensor failures
Malfunctioning sensors such as the MAF, O2, or knock sensor can lead to various engine performance problems.
Turbocharger issues (if equipped)
Problems with the turbocharger can lead to reduced power and efficiency.
GENESIS G90 2021

The 2021 Genesis G90 5.0 Ultimate is a luxury passenger car featuring a powerful 5.0L GDI TAU engine with 420 hp and an 8-speed automatic transmission. Safety is paramount with standard features like Dynamic Brake Support, Lane Departure Warning, Forward Collision Warning, and Pedestrian Automatic Emergency Braking. The vehicle boasts a spacious and comfortable interior with seating for five, multiple airbag locations, and advanced driver assistance systems such as Adaptive Cruise Control and Blind Spot Intervention. Manufactured in Ulsan, South Korea by Hyundai Motor Co, this Genesis model offers a refined driving experience with a focus on both performance and safety.

Spec:

Dynamic Brake Support (DBS)
Standard
Engine Brake (hp) From
420
Engine Model
GDI TAU
Engine Number of Cylinders
8

Problems:

Dynamic brake support malfunction
Dynamic Brake Support (DBS) may fail to activate correctly, reducing its ability to assist in emergency braking situations.
Engine misfire
The GDI TAU engine may experience misfires due to issues with fuel injection, ignition coils, or spark plugs.
Oil consumption
This engine model may have higher-than-normal oil consumption, requiring frequent oil level checks and top-ups.
Carbon build-up
Direct injection engines like the GDI TAU are prone to carbon build-up on intake valves, which can affect performance and fuel efficiency.
Check engine light
Various sensor failures or engine control module (ECM) issues can trigger the check engine light, requiring diagnostic scans to pinpoint the exact problem.
Cooling system issues
Problems with the radiator, water pump, or thermostat can lead to overheating, especially in high-performance engines like the GDI TAU.
Transmission problems
Although not directly related to the engine, issues with the transmission can affect overall vehicle performance, especially in a high-torque engine.
Exhaust system problems
Leaks or blockages in the exhaust system can lead to reduced engine efficiency and increased emissions.
Fuel system contamination
Contaminants in the fuel system can cause clogging of injectors and fuel filters, affecting engine performance.
Battery and electrical issues
Electrical problems can interfere with the engine's electronic control systems, leading to starting issues or erratic performance.
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