Used Audi A4 Rear Cross Member

The B8 A4 ran from 2008 to 2015 and the B9 from 2015 onwards, and these are completely different platforms, so the rear cross members are not interchangeable. Even though both share the A4 name, the underbody architecture changed significantly between generations. Always confirm the exact generation with the breaker using your registration number before ordering.

Yes, body style is the primary fitment consideration for a rear cross member — the Saloon, Avant (estate), and Cabriolet all have different rear underbody structures and the cross members are not shared between them. Make sure you tell the breaker exactly which body style you have, not just the A4 model name. Supplying your registration will help the breaker pull the correct part straight away.

The B7 A4 ran from 2004 to 2008 and the B8 from 2008 to 2015, and these sit on different platforms, so the rear cross members are very unlikely to interchange. The B8 moved to Volkswagen Group's MLB platform, which brought significant structural changes to the rear end. Confirm with the breaker whether a cross-generation swap is feasible for your specific body style and build.

The B8 A4 received a facelift in 2011 and the B9 in 2019, but facelift updates on the A4 have generally focused on front-end styling, engines, and interior trim rather than rear underbody structure. That said, whether the rear cross member pressing changed at either of those facelift points is something you should confirm with the breaker against your registration rather than assume. Giving the breaker your full VIN is the safest approach here.

Trim level — whether your A4 is SE, Sport, S Line, or Black Edition — has no effect on the rear cross member, as trim differences are cosmetic and relate to interior and exterior features rather than underbody structure. The cross member itself will be the same across trims within the same generation and body style. Focus on getting the generation, body style, and build year right when speaking to the breaker.

Both a 2012 and a 2008 A4 Avant fall within the B8 generation (2008–2015), so they share the same platform and body style, making fitment plausible in principle. However, whether any pressing or specification change occurred within the B8 production run is something you should verify with the breaker against both registrations before purchasing. If both cars are confirmed as pre-facelift or post-facelift B8 Avants with no mid-run changes, the breaker should be well placed to advise.