Mercedes-Benz A-Class Fuel Pump: Specs, Fitment & Common Faults

On the A-Class, a confirmed genuine safety recall addresses the low-pressure fuel pump's impeller deforming due to a manufacturing defect, causing the pump to shut down and the engine to stall suddenly while driving.

Illustration for editorial purposes

Find Mercedes-Benz A-Class Fuel Pump Here!

Opens live listings in a new tab.

Mercedes-Benz A-Class Fuel Pump: OEM Part Number

Accuracy note: genuinely worth knowing: high-mileage A-Classs often show early fuel pump wear as intermittent problems — starting fine most days but occasionally cranking longer than usual — rather than a sudden, total failure, which can make the root cause easy to misdiagnose as something else.

Mercedes-Benz A-Class Fuel Pump: A Part That Fails at the Worst Possible Moments

On the Mercedes-Benz A-Class, few faults pick a worse moment to happen than this one, which has a habit of leaving drivers stranded mid-journey rather than failing safely at home. Catching the early signs gives you a genuine head start before that happens to you.

Before you buy: fuel pump specifications vary by engine size and fuel type, and petrol/diesel versions are never interchangeable. Always confirm against your VIN before ordering.

Mercedes-Benz A-Class Fuel Pump: What It Does

On the Mercedes-Benz A-Class, fuel reaches the engine at the pressure combustion needs thanks to the fuel pump, which draws it straight from the tank. It sits submerged inside the tank itself, and that positioning is a big part of why replacement takes more effort than the part's size would suggest.

Mercedes-Benz A-Class Fuel Pump: Generations & Engines: Fuel Pump Type

Accuracy note: these are documented patterns by generation and engine family, not a substitute for confirming your exact engine code — always verify against your V5C before ordering, since petrol and diesel pumps are never interchangeable.

W176 (2012–2018) & W176 A45 AMG, all petrol (M270/M133)	Petrol: typically a single in-tank low-pressure pump; some later or higher-output variants may add a separate engine-mounted high-pressure pump for direct injection — confirm your exact engine
W176/W177, all diesel (OM651/OM654/OM608)	Diesel: in-tank lift pump feeds a separate engine-mounted high-pressure injection pump (common rail) — never interchangeable with the petrol pump
W177 (2018–present), all petrol (M282/M260)	Petrol: typically a single in-tank low-pressure pump; some later or higher-output variants may add a separate engine-mounted high-pressure pump for direct injection — confirm your exact engine
W177 A35 AMG & A45 S AMG (2019–present), 2.0 turbo (M139)	Petrol: typically a single in-tank low-pressure pump; some later or higher-output variants may add a separate engine-mounted high-pressure pump for direct injection — confirm your exact engine

Mercedes-Benz A-Class Fuel Pump reference plate

Find Mercedes-Benz A-Class Fuel Pump Here!

Opens live listings in a new tab.

Confirmed: A Genuine Safety Recall Worth Checking Your Car Against — Mercedes-Benz A-Class Fuel Pump

This is genuinely important to check directly: a confirmed recall covering many 2021-2023 models directly addresses the in-tank low-pressure fuel pump, where the pump's impeller can genuinely deform due to a manufacturing defect. Once deformed, the impeller can come into contact with its housing, creating resistance that shuts the pump down entirely and causes the engine to stall — a genuine safety concern, since this can happen suddenly while driving. Worth checking your specific VIN against the official recall register directly.

A genuinely useful, distinctive clue worth knowing: before the pump ceases operation entirely, a warning message may appear within the instrument cluster, and the engine may begin running roughly — worth treating either of these as an early warning sign worth investigating promptly.

It's also genuinely worth knowing this recalled low-pressure pump is a separate component from the engine-mounted high-pressure fuel pump, worth confirming which specific pump has actually failed before purchasing replacement parts.

Mercedes-Benz A-Class Fuel Pump: Warning Signs, DIY Difficulty & Aftermarket Advice

These are the same regardless of make or model — see our full Fuel Pump Guide for symptoms to watch for (including the low-pressure vs high-pressure distinction on direct-injection engines), confirming fitment against your VIN, and OE suppliers worth knowing.

More Mercedes-Benz Fuel Pump

The same part, covered across other Mercedes-Benz models.