Second Hand Mercedes-Benz GLA Air Flow Meter

Yes, but only on petrol-engined GLA variants — the petrol engines use a mass air flow (MAF) sensor as part of their fuelling management. Diesel-engined GLAs do not use a traditional air flow meter in the same way, as their fuelling is managed differently and they rely on other sensors such as a boost pressure sensor. Before searching, confirm whether your GLA is petrol or diesel, as ordering a MAF sensor for a diesel model would be a mistake.

These are two entirely separate generations — the original GLA (X156) ran from 2013 to 2020, while the current second-generation GLA (X247) launched in 2020 — and the two do not share the same engines or sensor specifications. Even where both generations offered similarly badged engines, the engine codes differ and the MAF sensors are not interchangeable. Always confirm the exact engine code from your V5 or a VIN check and supply it to the breaker rather than relying on the badge alone.

Trim level makes no difference to air flow meter fitment on the GLA — Sport, AMG Line, Executive, and other trim variants all share the same engine and fuelling components for a given engine code. What matters is the engine code, not the badge or trim pack fitted to the car. Confirm your engine code from the V5 or a VIN check and give that to the breaker, and ignore trim differences entirely when sourcing this part.

Both years fall within the first-generation X156 GLA (2013–2020), so there is a reasonable chance they share the same MAF sensor if the engine codes match — but the engine code is the critical detail, not the year. Mercedes did make running changes to components during the X156's production life, so confirm the engine code from both vehicles with the breaker before assuming the parts are identical. Never rely on year alone when sourcing this part.

The air flow meter follows the engine, not the drivetrain — a petrol GLA 200 with 4MATIC uses the same engine and the same MAF sensor as a two-wheel-drive GLA 200 with the same engine code. The 4MATIC system adds hardware to the drivetrain but does not change the engine's induction or fuelling sensors. Confirm the engine code is identical between the donor car and your vehicle, and the driven wheels are irrelevant.

In most cases a replacement MAF sensor on the GLA is a straight swap without coding, as these sensors are generally not paired to the ECU in the same way an injector or fuel pump unit might be — however this is something you should confirm with the breaker or your Mercedes specialist against your specific registration and engine code, as Mercedes ECU behaviour can vary. A basic reset or adaptation run with a diagnostic tool after fitting is often recommended to allow the engine management to relearn the new sensor's readings. Do not assume coding is or is not required without checking for your exact vehicle.