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:

    Automatic Hold
    The concept This system assists the driver by automatically setting and releasing the brake, such as when moving in stop-and-go traffic. The vehicle is automatically held in place when it is s ...

    2010 BMW X5 M Review
    On paper, the BMW X5 M seems about as incongruous as a car can be. It's a five-seat midsize crossover powered by a 555-horsepower, twin-turbocharged V-8 engine that can accelerate from zero to 60 ...

    Snap-in adapter
    General information Detailed information about snap-in adapter, which supports the functions of the mobile phone, available from the service center. Notes At high temperatures, the charge funct ...