Advice needed! I own a Skoda Octavia VRS Diesel 2007, but just acquired an Audi A4 Diesel 2006. I know parts are interchangeable, just curious what parts from the VRS will fit onto the A4, and what would be worth the effort (o  not worth it) to swap for performance upgrades to the A4?

 

Cheers! 

Not that much is compatible as the engines differ due to the longitudinal and transverse differences.