Second Hand Mercedes-Benz A-Class Window Regulator

The A-Class has run across four main generations: the W168 (1997–2004), W169 (2005–2012), W176 (2013–2018, with a facelift around 2015), and the current W177 (2018–present). Each generation uses a completely different body shell and door design, so regulators are not interchangeable between them. Always confirm your generation with the breaker, as the W176 facelift did not change the door structure so pre- and post-2015 W176 regulators are generally compatible, but a breaker can verify against your registration.

Both years fall within the W176 generation (2013–2018), so the body shell is the same, but 2014 is pre-facelift and 2017 is post-facelift (facelift arrived around 2015). The door frame itself was not significantly redesigned at the facelift, meaning there is a reasonable chance the regulator crosses the boundary, but you should confirm this with the breaker against your specific registration before buying.

Yes, this matters for the front doors — the 3-door A-Class has a longer front door than the equivalent 5-door, so the regulator, glass run, and mechanism dimensions differ between the two body styles. Always tell your breaker whether you have the 3-door or 5-door, and confirm this alongside the side (NS for nearside/passenger-left or OS for offside/driver-right) you need. Rear doors are of course only present on the 5-door, so there is no ambiguity there.

Trim level does not affect window regulator fitment on the A-Class — SE, Sport, AMG Line, and other trims all use the same door structure and regulator mechanism within a given generation and body style. You may find cosmetic differences such as interior door finishes or door card styling when sourcing from a different trim, but the regulator itself is a fitment item not a cosmetic one and will interchange freely across trims. Focus on matching generation, body style (3-door or 5-door), and side (NS/OS) rather than trim name.

In UK convention, nearside (NS) is the passenger side — the left side when you are seated in the car — and offside (OS) is the driver's side on the right. When contacting a breaker, always specify NS or OS clearly alongside your generation and door position (front or rear), as the regulators are mirror images of each other and are not interchangeable between sides.

The W176 ran from 2013 to 2018 and the W177 launched in 2018, and these are entirely different generations with different body shells and door designs. A regulator from the W176 will not fit a W177, so always ensure the breaker is sourcing a part from the same generation as your car, confirmed against your registration plate.