Used Mercedes-Benz C-Class Rear Cross Member

No — the W203 (2000–2007) and W204 (2007–2014) are completely different generations with different platforms, so their rear cross members are not interchangeable. You need to source from the correct generation for your car. Always confirm the part number with the breaker against your registration before buying.

Both years fall within the W204 generation (2007–2014), so they share the same platform and a rear cross member from a 2008 car could potentially fit a 2013 car — but the W204 received a facelift in 2011, and there may have been pressing or minor structural changes around that point. Name the exact year of your donor car to the breaker and ask them to check against your registration before you commit.

No — engine choice and trim level (whether that's SE, Sport, AMG Line, Avantgarde, or any other grade) make no difference to rear cross member fitment on the C-Class. The cross member is a structural chassis component tied to the platform and body style, not the drivetrain or specification. You can safely disregard trim when searching, though it's always worth having the breaker confirm against your reg.

Yes, body style is critical here — the saloon and estate (Touring/T-Model) have different rear structures to accommodate the different load areas and tailgate or boot arrangements, so their rear cross members are not the same part. Make sure you source from a car with the same body style as yours. Confirm with the breaker against your registration to be certain you're getting the right pressing.

The W205 ran from 2014 to 2021 and received a facelift in 2018, so a 2015 donor and a 2019 car sit on either side of that facelift boundary. The platform is the same throughout, but whether the rear cross member is identical across the facelift is not something to assume — confirm with the breaker using both registration numbers before purchasing.

Yes, this is the first thing to get right — saloon and estate body styles have fundamentally different rear ends, so a rear cross member from one will not suit the other regardless of year or engine. Always tell the breaker your exact body style alongside your registration, and do not accept a part listed only as 'C-Class' without that confirmation.