2013 Cadillac ATS Premium 4dr Sedan (3.6L 6cyl 6A)
I have owned two M3s and an S4 among other cars.
But after test-driving the 3.6 ATS and comparing prices, the Caddy ATS won hands down for me.
For handling, ride comfort, and braking, ATS beats the others. Yeah, M3 is quicker by .7 sec to 60 ... not a big deal unless you take your ride to the track every weekend.
Mileage: 19mpg city, 29 highway(!), 24 combined so no complaints there especially as compared to M3. This car is a pleasure to drive with its great handling, and it feels good to have finally cut the cord to those overpriced Germans. CUE is not perfect but is far from a deal-breaker. Overall: this car is a winner and I have NO regrets with this purchase.