Second Hand Mercedes-Benz X-Class Engine

The Mercedes-Benz X-Class ran as a single generation from 2017 to 2020 with no facelift, so the production run is one consistent family throughout. Fitment depends primarily on matching the engine code exactly — the code is stamped on the block and also appears on your V5 or via a VIN check — along with fuel type and gearbox type. That said, ancillary components and engine mountings can vary across production years even within the same generation, so confirm the specific year and spec against your registration with the breaker before buying.

The engine code is the single most reliable detail for matching a used X-Class engine — fuel type and year narrow the field, but the code confirms you have the right unit. The X-Class shared its platform and engines with the Nissan Navara, meaning the same engine code can appear across different badges, which makes code-matching even more important. Give your engine code to the breaker alongside your registration and they can verify compatibility far more accurately than year alone.

Trim level — whether Pure, Progressive, or Power — does not affect engine fitment on the X-Class; the engine fitted depends on which powertrain option was ordered, not the trim badge. What matters is the engine code, fuel type (diesel in most UK X-Class examples), and whether the vehicle has a manual or automatic gearbox and two-wheel or four-wheel drive. You may find cosmetic engine-bay differences between trim levels, but these do not change which replacement engine block you need.

Yes, the 250d four-cylinder units were far more common in UK X-Class sales, so the 3.0 V6 found in the 350d is a less frequently dismantled engine and breakers will have fewer of them. When you do find one, matching the engine code is especially important because gearbox pairing and four-wheel-drive configuration on the V6 cars must align with your original setup. Confirm with the breaker that the code, drivetrain type, and any associated ancillaries match your registration before proceeding.

The X-Class and Nissan Navara D23 share the same basic engine family, and in some cases the core engine block is the same unit, but Mercedes-Benz made changes to ancillaries, engine management, and mounting arrangements for the X-Class application. Whether a specific Navara engine crosses over to your X-Class is something you must confirm with the breaker against your exact registration and engine code — do not assume a straight swap based on platform sharing alone. ECU pairing and immobiliser coding also need to be discussed with the breaker, as these are vehicle-specific considerations we cannot confirm here.

The most useful things to provide are your engine code (found on the block itself, your V5, or a VIN check), your registration number, fuel type, gearbox type (manual or automatic), and whether your vehicle is two-wheel or four-wheel drive. Year of manufacture helps the breaker cross-reference stock, but the engine code overrides year as the primary matching detail. Having these ready means the breaker can quote accurately and flag any concerns about ancillary compatibility before you commit.