2008 BMW 1 Series 135i 2dr Coupe (3.0L 6cyl Turbo 6M)
I test drove it on the Autobahn and it is the bomb! Really fast. There is a slight lag in the throttle response during highway (Autobahn) overtaking, but I can live with that. Probably from the turbos. Using the sequential manual transmission is a blast. However, the gas mileage is really poor in that mode. I drove a total of 29 miles all in the SMT mode and used a quarter of a tank. Assuming a full tank is 16 gallons, I used 4-gallons, or about 7-miles to the gallon. Too bad. If you really like sporty driving then get a manual transmission. That said from a performance perspective, it is almost a perfect car.
The motor and the sound!
More economical sequential manual transmission. Put a non-turbo 300 HP motor in the car.