Throttle body clogging / throttle position sensor
Often reportedMost W169 A150 owners report carbon buildup in the throttle body, causing idle fluctuation, stalling when releasing the accelerator, and the check engine light coming on.
Engine Bay
When buying a used Mercedes-Benz A-Class A160 2009 (169 / facelift), the most frequently mentioned issue is: Throttle body clogging / throttle position sensor. Also, Fuel pump / relay failure is commonly reported.
Engine varies by trim; verify the engine code on the listing.
Listed from most frequently reported, each with its source.
Most W169 A150 owners report carbon buildup in the throttle body, causing idle fluctuation, stalling when releasing the accelerator, and the check engine light coming on.
Engine Bay
Repeated reports on Italian forums indicate intermittent failures of the fuel pump or relay in the A150 (W169). Typical symptoms include difficulty starting after short stops, sudden stalling, and random restarting after a few minutes.
Fuel System
The in-tank fuel pump assembly may not draw fuel properly in certain positions (e.g., when parked on an incline), causing hard starting or stalling.
Fuel System
Same trim, different year
We only publish claims we can verify. Cards come from Difetti fault records matched to this vehicle on brand, fuel, engine and generation.