BMW’s straight-six raises the bar. Again. The rest of the car is nice, too. Can an engine make a car? Yes, and the BMW X3 M50 is proof. The latest version of the X3 may not be a perfect car, but when ...

The best BMW X1 you can buy is priced dangerously close to the six-cylinder X3, making a choice between the two surprisingly tricky. Fully loaded BMW X1 M35i rivals basic X3 M50 in price and features.