Second Hand Mercedes-Benz B-Class Sunroof

Yes, a panoramic glass sunroof was available on the B-Class as an optional extra or as part of certain specification packages, so some cars have one and some do not — it was never standard across the range. If you are sourcing a replacement, you need a donor car that was actually fitted with a sunroof, so confirm with the breaker that the part came from a sunroof-equipped vehicle against its registration.

No — the W245 and W246 are entirely different platforms with different body pressings, so the glass panel, frame, mechanism, and headlining surround will not interchange between these two generations. You need to match the part to your generation: W245 for 2005–2011 cars and W246 for 2011–2018 cars. Always confirm the exact part against your registration with the breaker.

The W246 B-Class received a facelift in 2015, and while the major body structure remained the same, there is a possibility of subtle changes to roof pressing or trim surround details between pre- and post-facelift cars. The core generation match is the most important factor, but whether the specific sunroof assembly crosses the 2015 facelift boundary safely is something you should confirm with the breaker against both registrations rather than assume.

Trim level — whether that is SE, Sport, AMG Line, or any other grade — does not affect the physical fitment of the sunroof mechanism or glass, as the roof aperture is the same across the range for a given generation. What may differ is the interior headlining colour or finish surrounding the sunroof, so a unit pulled from an AMG Line car might have a slightly different trim aesthetic to one from an SE, even if it fits correctly. Mechanically the part should interchange within the same generation, but confirm with the breaker if the cosmetic finish matters to you.

No — engine choice and gearbox type have no bearing whatsoever on sunroof fitment, as the roof is entirely independent of the drivetrain. Whether your B-Class is a diesel, petrol, or electric (EQ), the sunroof assembly is determined by the generation and whether the original car was sunroof-equipped, not by what is under the bonnet.

The most important checks are that the donor car is the same generation as yours — W245 (2005–2011) or W246 (2011–2018) — and that it was actually fitted with a sunroof from the factory, since many B-Class cars left the factory without one. Ask the breaker to confirm the part against your registration, and if possible check that the motor, drainage tubes, and headlining surround are included, as a sunroof without its mechanism and seals can be costly to complete.