Under the Hood

The 135i's turbocharged inline-six makes 300 horsepower and 300 pounds-feet of torque. It works through a six-speed manual or BMW's seven-speed dual-clutch automatic. Either car hits 60 mph in about 5 seconds, BMW says. The M Sport Package adds a sport-tuned suspension with high-performance, six-piston front and two-piston rear brakes.

If that seems like too much, consider stepping down to the 230-hp, normally aspirated 128i, which is covered separately in the Cars.com Research section.

    See also:

    Adjusting
    The parking lamps or low beams must be switched on to adjust the brightness. Adjust the brightness using the thumbwheel. ...

    Safety
    Neither the Insurance Institute for Highway Safety nor the National Highway Traffic Safety Administration has tested the 2007 X3. Standard safety features include four-wheel-disc antilock brakes, ...

    Indicator/warning lamps
    The indicator lamp flashes: DSC controls the drive forces and brake forces. The indicator lamp lights up: DSC has failed. ...