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:

    Sport program DS and manual mode M/S
    Activating sport program DS Activating sport program DS Push the selector lever to the left out of transmission position D. DS is displayed in the instrument cluster. The sport program of th ...

    Tilting the glass sunroof
    Press the switch. The closed sunroof is tilted and the sliding visor opens slightly. Do not use force to close the sliding visor Do not use force to close the sliding visor with the glass s ...

    System limits
    Personal judgment The system cannot serve as a substitute for the driver's personal judgment of the traffic situation. The system assists the driver and does not replace the human eye. The s ...