Mercedes-Benz GLA Door Lock Mechanism Replacement Parts

The Mercedes-Benz GLA first generation (X156) ran from 2013 to 2019 and received a facelift in 2017, but the door lock mechanism is an internal mechanical component and the facelift was primarily cosmetic, so there is a reasonable chance of compatibility within the X156 generation — however you should confirm the exact part number with the breaker against your registration before buying, as minor running changes can affect clips, linkage geometry, or actuator design.

No — the engine type has no bearing on door lock mechanism fitment; the mechanism is mounted in the door frame and is entirely independent of the drivetrain. What matters is the generation, the door (front or rear), and the side — nearside (NS, passenger left) or offside (OS, driver right) — so make sure you quote those details to the breaker rather than the engine code.

Trim level does not affect the door lock mechanism on the GLA — the mechanism is determined by the generation (X156 for 2013–2019, or X247 for the second-generation model from 2020 onwards), the specific door position, and the side (NS or OS), not by whether the car is a standard, Sport, AMG Line, or Executive grade. You may find trim-level cars have slightly different door furniture cosmetically, but the lock mechanism behind the panel is the same, so do not let trim level put you off a otherwise correctly specified part.

No — the second-generation GLA (X247, launched 2020) is a substantially different vehicle from the first-generation X156 (2013–2019) and the two generations are not interchangeable for door lock mechanisms; the door structures, mounting points, and linkage designs differ between the platforms. Always source a mechanism from the correct generation and confirm with the breaker using your registration number.

Yes, it matters — front and rear door lock mechanisms are different parts with different linkage configurations and should not be mixed; similarly, nearside (NS, passenger side, left) and offside (OS, driver side, right) versions are handed and must match the door you are replacing. Always tell the breaker exactly which door you need: for example, 'nearside rear' or 'offside front', and confirm against your registration.

All three years fall within the first-generation X156 GLA, so the door lock mechanism should be from the same basic platform, making fitment plausible — however early production runs sometimes have minor component variations, so it is worth asking the breaker to cross-reference the part number against your registration rather than assuming all X156 years are identical.