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.

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    Activating
    Activating The High-beam Assistant can be activated when the low beams are switched on. 1. Turn the light switch to or . 2. Press the button on the turn signal lever, arrow. The indicator ...

    Detailed information on service requirements
    More information on the scope of service required can be displayed on the Control Display. 1. "Vehicle Info" 2. "Vehicle status" 3. "Service required" Required mai ...

    Brake assistant
    When you apply the brakes rapidly, this system automatically produces the maximum braking force boost. It thus helps to achieve the shortest possible braking distance during full braking. This ...