Used BMW i4 Air Flow Meter

No — the BMW i4 is a fully electric vehicle and has no internal combustion engine, so it does not use an air flow meter (also called a MAF sensor) at any point in its production history. Air flow meters measure the volume of air entering a petrol or diesel engine to help control fuelling, a function that simply does not exist on an EV drivetrain. If your diagnostic tool is showing a fault code that mentions air flow, it is worth having the code read properly by a BMW specialist, as it may relate to a thermal management component, the battery cooling system, or a software issue rather than a traditional MAF sensor.

Almost certainly yes — because the i4 is fully electric there is no air flow meter on any variant, including the eDrive35, eDrive40, M50, or xDrive40. If you are looking for a sensor related to airflow in an EV context, you may be thinking of a component in the cabin air system, battery cooling circuit, or heat pump assembly, and a breaker who specialises in BMW EVs or the i4 specifically will be best placed to identify the correct part from your registration. It is also worth double-checking that the fault or part reference you have was generated for your exact vehicle rather than copied from a petrol or diesel BMW.

A petrol or diesel 3 Series or 4 Series (G20/G22 generation, 2019 onwards) does use an air flow meter because those models have combustion engines, but that part cannot cross over to the i4 — there is no equivalent fitting point, wiring, or ECU function on the i4's electric drivetrain. If you actually own a petrol or diesel G20 3 Series or G22 4 Series and need a MAF sensor, that is a genuinely available used part from breakers, and engine code is the single most important detail to supply when getting quotes. Confirm your engine code from your V5 or a VIN check before approaching a breaker.

Trim level makes no difference here because neither the eDrive40 nor the M50 — nor any other i4 variant — has an air flow meter fitted; the absence of the part applies equally across the entire i4 range regardless of power output or specification. If you do need a drivetrain-related sensor for an i4, the motor type and software variant will matter far more than trim, and you should confirm the exact part reference with a breaker against your registration. The M50's dual-motor setup does mean some electrical and cooling components differ from the single-motor models, so always quote your full VIN when asking breakers for EV-specific sensors or modules.

It is worth going back to your mechanic and asking them to confirm the fault code and the vehicle it was generated for, because a genuine MAF-related code on a fully electric vehicle would be unexpected and may point to a diagnostic software error or a code misread from a shared platform. If there is a genuine airflow-related issue on an i4, it is more likely to involve the cabin air system, the heat pump, or battery thermal management, all of which are specialist EV components best sourced and confirmed with a BMW EV breaker or main dealer. Providing your registration or VIN to a breaker will help them identify whether any relevant used cooling or air management parts are available from a salvage i4.