Jim 
2007 BMW 3 Series Sedan 335i 4dr Sedan (3.0L 6cyl Turbo 6M)
First BMW and my last
 I wanted to try the BMW and was impressed with the 335i advertised horsepower and torque. But I didn't really notice the turbo lag on the test drive when I bought the car. Now 2 years later I can't wait to turn this vehicle in. It has been back to the dealer 3 times for performance and I am always told this is normal. It is extremely irritating and dangerous. Try to pull out in traffic or try to go when it is your turn at a 4 way stop and you will have a one second delay from the time you hit the gas until it goes. Then it jerks as the traction control goes on and off. I have had the brake sensors replaced and the steering column. Stay away from this car. Poor quality and performance. 