Used BMW 4 Series Fuel Tank

The BMW 4 Series F32/F33/F36 generation ran from 2013 to 2020, with a facelift introduced in 2017, and while the core body structure was carried over, ancillary fittings, sender unit connections and mounting brackets can differ across that 2017 boundary. The engine code from your V5 or a VIN check is the most reliable detail to supply to a breaker when asking about cross-facelift compatibility. Always confirm with the breaker against your exact registration before buying.

Yes, fuel type is a key fitment factor — diesel and petrol 4 Series models can differ in tank capacity, filler neck design and associated components such as the fuel pump sender unit, so you should never assume a diesel tank will cross-fit a petrol car or vice versa. Always tell the breaker your fuel type and engine code when requesting a quote.

Gearbox type can influence tank shape or capacity on some BMW platforms because of how the tunnel and drivetrain packaging is arranged, so it is worth specifying whether your car is manual or automatic when contacting a breaker. Supply your engine code and registration to let the breaker confirm the correct unit.

Trim level alone — whether SE, Sport, M Sport or the xDrive four-wheel-drive variant — does not determine which fuel tank fits, because the tank is a mechanical component driven by the engine code, fuel type and drivetrain layout rather than the badge or interior specification. The exception worth checking is xDrive, where the additional rear-axle hardware can affect underfloor packaging, so confirm against your registration with the breaker. Cosmetic or ancillary differences between trim levels are irrelevant to the tank itself.

The 4 Series F32 coupe and the 3 Series F30 saloon share the same F3x platform and some mechanical components, so there is a possibility of overlap, but body style differences mean the underfloor packaging and tank shape may not be identical. Your engine code is the most useful detail to provide, and you should confirm compatibility directly with the breaker against both registrations before purchasing.

The single most useful piece of information is your engine code, which appears on your V5C or can be found via a VIN check, because mechanical parts on BMW models follow the engine code above the model badge or year alone. You should also supply your fuel type (petrol or diesel), whether the car is manual or automatic, your drivetrain (rear-wheel drive or xDrive), and your registration so the breaker can cross-reference everything. Never rely on year or trim level alone when sourcing a fuel tank.