Cheap Mercedes-Benz A-Class Fuel Filter

It depends on the generation and fuel type. Petrol A-Class models from the W168 (1997–2004) and W169 (2004–2012) generations do have an inline fuel filter, but later W176 (2012–2018) and W177 (2018–present) petrol models moved to a non-serviceable filter integrated into the fuel pump assembly inside the tank, meaning there is no separately replaceable inline filter on those later cars. Diesel A-Class variants across generations tend to have a serviceable fuel filter, often combined with a water separator, so if you have a diesel confirm the engine code and a breaker can match the correct unit.

These are different generations with different engine families, so a direct swap is very unlikely even if the fuel types match. The W168 uses older M166 and OM668 engine families while the W169 uses M266 and OM640 units, and the filter housings, connections and flow rates differ accordingly. Always supply your engine code — found on your V5 or via a VIN check — when asking a breaker, rather than going by generation alone.

Yes, diesel W176 A-Class models (2012–2018, facelifted 2015) do have a serviceable fuel filter with water separator, unlike their petrol counterparts on the same generation. The correct filter depends on your exact engine code — for example the OM607 and OM651 diesels found in this generation may not share the same unit — so quoting your engine code to the breaker is essential. Do not rely on model year alone, as ancillary changes can occur mid-production and a breaker should confirm against your registration.

No, trim level has no bearing on fuel filter fitment whatsoever. SE, Sport, AMG Line, Executive and any other trim designation on the A-Class are cosmetic and equipment packages — the fuel system is determined entirely by engine code and fuel type. Give your engine code to the breaker and ignore the trim badge completely.

Both a 2012 and a 2014 W176 A-Class sit within the pre-facelift period (the facelift arrived for the 2015 model year), so on paper they share the same generation of engine and fuel system. However, whether the filter physically interchanges depends on matching engine codes exactly, and mid-production ancillary changes are possible within a generation, so confirm against your registration with the breaker rather than assuming year proximity guarantees compatibility.

On W177 petrol models the fuel filter is integrated into the fuel pump module inside the fuel tank and is not a separately available serviceable part in the traditional sense, so you are unlikely to find a standalone fuel filter listed for these cars. If you are having fuel delivery issues, what you may actually need is the complete in-tank fuel pump assembly, which does exist as a used part and which breakers can supply — quote your engine code when requesting a quote to ensure the correct pump unit is matched to your car.