Bmw 535i and audi a6 Source Source Source Source Source Source Source Read Also: Audi a6 compared to bmw 535i Bmw 535i vs audi a6 2014 Bmw 535i vs audi a7 Bmw 535i vs audi a6 Bmw 535i vs audi a6 2013 Bmw 535i vs cadillac cts