Most Common Car Issues

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Dynamic Brake Support (DBS)

Engine Brake (hp) To

Engine Number of Cylinders

Make

Model

Model Year

MOST COMMON PROBLEMS

BMW 750i / B7 2018

The 2018 BMW 750i xDrive / B7 xDrive LWB is a luxury all-wheel-drive passenger car, boasting a 4.4L V8 engine with up to 600 horsepower. It offers advanced safety features like Dynamic Brake Support, Lane Departure Warning, and Blind Spot Warning as standard. With a top speed of 155 MPH and a base price of $99,400, it provides a blend of performance and luxury. Optional features include Adaptive Cruise Control and Pedestrian Automatic Emergency Braking.

Spec:

Dynamic Brake Support (DBS)

Standard

Engine Brake (hp) From

443

Engine Brake (hp) To

600

Engine Number of Cylinders

Other Engine Info

Engine Brake (hp) for 750i = 443 Engine Brake (hp) for B7 = 600

Problems:

Engine misfire

Misfires can occur due to issues with spark plugs, ignition coils, or fuel injectors, affecting engine performance.

Oil leaks

Common in high-performance engines, oil leaks can stem from worn gaskets or seals, leading to potential engine damage.

Turbocharger problems

Turbocharged engines, like those in the 750i/B7, can experience turbo failure or boost leaks, leading to reduced power.

Cooling system failures

High-performance engines generate a lot of heat, so issues with the cooling system can lead to overheating and engine damage.

Timing chain issues

Timing chain wear or failure can cause significant engine damage and is a known problem in some BMW models.

Fuel system problems

Issues with fuel pumps or injectors can lead to poor engine performance and efficiency.

Carbon buildup

Direct-injection engines can suffer from carbon buildup on intake valves, affecting performance and fuel economy.

Electrical problems

BMW vehicles often have complex electrical systems that can encounter issues, leading to warning lights or malfunctions.

Transmission problems

The transmission can experience issues like slipping or rough shifting, especially in high-performance models.

Sensor failures

Various sensors (e.g., oxygen sensors, MAF sensors) can fail, leading to poor engine performance and error codes.

BMW 750i / B7 2019

The 2019 BMW 750i / B7 is a luxury sedan from the renowned 7-Series, featuring a powerful 4.4L V8 engine with up to 600 hp. It offers all-wheel drive and extensive safety features including front, side, and curtain airbags, as well as pretensioners for the front seats. Manufactured in Dingolfing, Germany, this model epitomizes BMW's commitment to performance and safety.

Spec:

Engine Brake (hp) From

443

Engine Brake (hp) To

600

Engine Number of Cylinders

Other Engine Info

Engine Brake (hp) for 750i = 443 Engine Brake (hp) for B7 = 600

Problems:

Oil leaks

BMW V8 engines, including the ones in the 750i and B7, are known to develop oil leaks, often from the valve cover gaskets or oil pan gaskets.

Timing chain issues

Some BMW V8 engines have experienced problems with the timing chain, which can lead to serious engine damage if not addressed.

Cooling system failures

BMW V8 engines are prone to cooling system issues, including water pump and thermostat failures, which can cause the engine to overheat.

Fuel injector problems

The high-pressure fuel injectors in BMW V8 engines can become clogged or fail, leading to poor performance and misfires.

Turbocharger failures

On models equipped with turbochargers, such as the B7, turbocharger failures can occur, leading to reduced power and potentially costly repairs.

Carbon build-up

Direct-injection engines like those in the 750i and B7 can suffer from carbon build-up on intake valves, which can affect performance and fuel economy.

Electrical issues

BMWs, including the 750i and B7, can experience various electrical problems, such as issues with the engine control unit (ECU) or other electronic components.