Used Mercedes-Benz A-Class Air Flow Meter

It depends on the engine variant. Petrol A-Class engines — particularly the naturally aspirated and some turbocharged four-cylinder units — do use a mass air flow (MAF) sensor, so the part exists on many variants. However, some diesel variants use a different aircharge measurement approach, so whether your specific engine has one is best confirmed against your engine code rather than assumed from the badge or fuel type alone.

Almost certainly not — the W168 (1997–2004) and W169 (2004–2012) are entirely different generations with different engine families, different air intake architecture, and different sensor connectors. These are two distinct platforms and the parts are not interchangeable. Always match the air flow meter to the engine code, not just the A-Class name.

The engine code matters more than anything else for this part — two A-Class models from the same year and same fuel type can use different MAF sensors if they carry different engine codes. Your engine code is printed on your V5C or available via a VIN check, and supplying it to the breaker is the single most useful thing you can do when requesting a quote. Year and fuel type alone are not reliable enough to guarantee the correct sensor.

The trim or badge designation (A 180, A 200, A 250 and so on) matters only insofar as it typically indicates a different engine code — it's the engine code itself that determines which MAF sensor is correct, not the badge. Two cars both badged A 200 could theoretically carry different engine codes across a production run, so always confirm the engine code directly. Trim level in terms of equipment grade (standard, Sport, AMG Line) has no bearing on air flow meter fitment whatsoever.

The W176 generation ran from 2012 to 2018, with a facelift in 2015, and on paper engines sharing the same code across that boundary are strong candidates for compatibility. However, ancillary component and sensor specification changes can occur mid-production without a full model update, so whether the specific sensor from a pre-facelift or post-facelift car crosses that 2015 boundary safely is something you should confirm with the breaker against your registration and engine code before buying.

No — petrol and diesel engines use fundamentally different air management systems and the MAF sensors are not interchangeable between fuel types. Always source a sensor that matches your exact engine code, and make clear to the breaker whether your car is petrol or diesel when requesting a quote. Fitting the wrong sensor will result in poor running or fault codes.