Carbon buildup
Often reportedOn 1.5 M264 direct injection engines, carbon deposits form on intake valves and ports; this causes idle fluctuations and slight power loss, requiring periodic intake cleaning.
Engine Internal
When buying a used Mercedes-Benz C-Class C180 2020 (205 / facelift), the most frequently mentioned issue is carbon buildup. Additionally, sensitivity to octane rating (risk of knocking) is also commonly reported.
Engine varies by trim; verify the engine code on the listing.
Listed from most frequently reported, each with its source.
On 1.5 M264 direct injection engines, carbon deposits form on intake valves and ports; this causes idle fluctuations and slight power loss, requiring periodic intake cleaning.
Engine Internal
The engine is sensitive to low-octane fuel; this can cause knocking and potentially damage pistons or require major repairs.
Engine Internal
On some modern M264 engine versions, injection system issues are reported, particularly with piezo injectors and direct injection components.
Fuel System
On modern turbo engines similar to the M264, turbo problems such as noise, power loss, and exhaust smoke are reported.
Turbo
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.