I've owned my 540i 6 speed sport for one year now. Although its going on 8 years old and 103K miles, it doesn't have a single rattle - the build quality is exceptional. The torque of the V8 is addictive and takes the car from an everyday commuter to track day hooligan. Two car seats fit great in the back and even though I'm putting in premium at >$3 a gallon, I'm getting 24 mpg on the highway in 6th gear. These cars are more maintenance intensive than your everyday Japanese appliance, but the drive is worth it!