BMW E90 M3, Audi RS4 & C63 AMG Battle CT4-V Blackwing: Which Is Best?
Jason Cammisa RetroSpective: Can the 2008 BMW M3, Audi RS4, and Mercedes C63 AMG still compete with today's best? Jason Cammisa pits the three V8-powered German Compact Sedans against today's best Sport Sedan, the Cadillac CT4-V Blackwing.
