Originally Posted by LarThaL
Correct. Take the same enthusiast driver after one year of ownership with each car, and I'll bet they will be able to take the M3 around a track faster than an RS5. On day one, they will be faster in the RS5. The M3 has a learning curve, but the RS5, due to quattro, really doesn't.
You will lose money. Check out fastestlaps.com and type in RS5 vs M3 (where the RS5 wins 12 out of 15), and/or check out the "Fifth Gear" episode where the racer types find that the RS5 is just that little bit quicker around a road course.
Not to take anything away from the M3. It's more fun to drive (on the street or on track), according to the road testers.