Mercedes-Benz CLA Air Flow Meter Replacement Parts

Yes, but only on petrol-engined CLA variants — the petrol engines use a mass air flow (MAF) sensor as part of their fuelling system. The diesel engines fitted to the CLA (such as the OM651 and OM608 units) do not use a traditional air flow meter in the same way, relying instead on a different air management setup. So whether your CLA has one depends entirely on whether it is petrol or diesel — check your V5 or run a VIN check to confirm your fuel type and engine code before ordering.

The C117 and W118 are distinct generations of the CLA, and while some petrol engine families carry across, the engine codes and associated ancillary components can differ between them — the C117 ran from 2013 with a facelift in 2016, while the W118 launched in 2019. The engine code is the key detail here: if both cars share the exact same engine code, there is a stronger chance of compatibility, but the breaker will need to confirm this against your registration before you commit. Do not assume a cross-generation swap will work without that check.

The C117 received a facelift in 2016, and while the core engine codes were largely carried over, there can be ancillary and sensor specification changes mid-production that are not always well-documented. Your engine code (found on your V5 or via a VIN check) is the most reliable guide, but you should confirm with the breaker whether the specific sensor matches your pre- or post-facelift build date. Quoting your full registration to the breaker is the safest approach here.

No — trim level does not affect the air flow meter at all; fitment is determined by the engine code, not whether the car is badged Sport, AMG Line, or any other trim designation. Both trims use the same mechanical engine components, so a sensor from a Sport-spec donor car can be perfectly correct for an AMG Line car if the engine codes match. Just bear in mind the donor car may look visually different with different body styling, but that has no bearing on whether the air flow meter is the right one for your engine.

Not necessarily, because the badge (180 or 200) reflects a state of tune and output level, and Mercedes sometimes uses different engine codes or variants beneath similar-looking badges. Both are petrol engines and do use an air flow meter, but you need to compare the actual engine codes rather than relying on the badge — your engine code will be on your V5 or available from a VIN check. Give the breaker your engine code and they can verify whether the donor unit is a match.

Physically, a mass air flow sensor on the CLA is generally a plug-and-play replacement and does not typically require ECU coding in the way that some other electronic components do — most used units can be swapped without specialist equipment. However, whether a specific used sensor may require any pairing or adaptation with your particular ECU is something you should confirm with the breaker or a Mercedes-specialist before purchasing. It is always worth having a diagnostic scan carried out after fitting any used sensor to confirm the engine management system is reading it correctly.