Most Common Car Issues
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MOST COMMON PROBLEMS
MERCEDES-BENZ GLS-Class 2018
The 2018 Mercedes-Benz GLS550-4M is a luxurious 7-seater MPV equipped with a powerful 4.7L V8 engine delivering 429 hp. It offers advanced safety features such as Dynamic Brake Support, blind spot warning, and multiple airbags across all three rows. Standard amenities include adaptive driving beam headlights, a backup camera, and parking assist. This all-wheel-drive vehicle is built for performance and comfort, making it a premium choice for families.
Spec:
Dynamic Brake Support (DBS)
Standard
Engine Brake (hp) From
429
Engine Configuration
V-Shaped
Engine Manufacturer
Daimler
Engine Model
M278
Engine Number of Cylinders
8
Engine Stroke Cycles
4
Problems:
Oil leaks
The Mercedes-Benz M278 engine is known for oil leaks, often from the timing chain cover or valve cover gaskets. This can lead to oil loss and potential engine damage if not addressed.
Timing chain issues
The M278 engine can suffer from timing chain stretch or wear over time, leading to poor engine performance or even engine failure if the chain skips teeth or breaks.
Turbocharger problems
The twin-turbo setup on the M278 engine can sometimes lead to turbocharger failures or issues such as oil leaks and reduced performance due to worn-out turbo components.
Carbon build-up
Direct injection engines like the M278 are prone to carbon build-up on intake valves, which can cause rough idling, misfires, and reduced engine efficiency.
Coolant leaks
The engine may develop coolant leaks from components such as the water pump or radiator, leading to overheating issues if not properly maintained.
Ignition coil failures
The M278 engine may experience ignition coil failures, leading to misfires and reduced engine performance.
Serpentine belt wear
The serpentine belt on the M278 engine can wear out over time, leading to potential belt failure and loss of accessory functions such as the alternator and power steering.
Pcv system issues
Problems with the Positive Crankcase Ventilation (PCV) system can lead to oil consumption and potential engine performance issues.