Mercedes-Benz B-Class Radio Replacement Parts

The B-Class runs across two main generations: the W245 (2005–2011) and the W246 (2012–2018, with a facelift around 2015). Radios within the same generation are more likely to be compatible, as the head unit design, wiring loom, and control interfaces tend to match. Crossing from a W245 to a W246 radio is a different matter and we'd strongly recommend confirming compatibility with the breaker against your registration before ordering.

This question spans the W246 facelift, which occurred around 2015, so a 2014 car is pre-facelift W246 and a 2016 is post-facelift W246. The facelift sometimes brought updates to the infotainment system and interface connections, meaning a straight swap is not guaranteed. Confirm with the breaker using both registration numbers to check whether the specific units are a match before you buy.

Trim level alone does not determine whether a radio will physically fit — the generation (W245 or W246) and the specific head unit fitted to the donor car are what matter. That said, higher trims such as Sport, SE, and AMG Line may have been supplied with different factory stereo systems (for example, Harman Kardon audio), so the unit pulled from a top-spec car may look or function differently from a base-spec one even if the aperture matches. Ask the breaker to confirm the exact head unit type from the donor vehicle so you know what to expect.

The W245 (2005–2011) and W246 (2012–2018) are entirely separate generations with different dashboard designs, wiring looms, and infotainment architectures, so a direct swap is very unlikely to work without significant modification. This is a cross-generation swap and we'd route this firmly to the breaker to assess, rather than assume compatibility. In most cases, sourcing a radio from the same generation as your car is the straightforward path.

Both 2007 and 2009 B-Class models sit within the W245 generation (2005–2011), so the head unit design and fixings are generally consistent across those years. Compatibility is more likely here than across generations, but the exact audio system fitted can vary by specification, so it is worth the breaker confirming the unit matches your car's setup before you commit. Never rely on year alone as a guarantee of fitment.

No — the engine fitted to the donor car has no bearing on radio compatibility for the B-Class. What matters is the generation (W245 or W246), the specific head unit model, and whether the wiring connections match your car. Focus your questions to the breaker on the unit type and the car's registration rather than its engine.