Used Mercedes-Benz GLS Wing Mirror

The GLS X166 generation ran from 2016 to 2019, while the current X167 generation launched in 2019, so a 2016 mirror and a 2020 mirror are from different generations and are very unlikely to be a direct fit. You should always confirm cross-generation compatibility with the breaker against your exact registration before ordering. Side must also match — NS (nearside, passenger left) or OS (offside, driver right).

Both years sit within the X166 generation (2016–2019), so the mirror shells are generally from the same family and fitment is more likely to be compatible. However, you should confirm the side — NS or OS — matches your vehicle, as these are not interchangeable. Check with the breaker against your registration to be sure, as minor running changes can occur within a generation.

Trim level such as AMG Line does not change the fundamental shape or mounting of the GLS wing mirror frame, so fitment across trims within the same generation is generally the same. The main fitment variables are generation (X166 or X167) and side (NS or OS). Bear in mind that cosmetic differences like finish or cover style may exist between trims, but the frame itself should mount correctly — and any colour differences can be resprayed.

No — NS (nearside, passenger left) and OS (offside, driver right) wing mirrors are completely different parts with different housings, arm angles and internal layouts, and cannot be swapped between sides. Always specify NS or OS when asking a breaker for a quote. In UK right-hand-drive vehicles, the OS is the driver's side.

2019 is the boundary year between the X166 generation (2016–2019) and the newer X167 generation (2019 onwards), so a mirror from a 2019 car could belong to either generation depending on when in the year it was built. Because of this, you should confirm with the breaker exactly which generation the donor vehicle is from, matched against your own registration, before purchasing. Do not assume a 2019-plate mirror is a safe fit without that check.

Those features do not affect whether the mirror physically fits your car — the mounting and frame are the fitment-critical factors, along with generation (X166 or X167) and side (NS or OS). However, whether a particular mirror's features such as electric folding, heating or an indicator repeater will work correctly with your car's wiring is something you should confirm with the breaker against your registration. The breaker will be best placed to advise on feature compatibility once fitment is established.