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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    Navigation
    Route planning can be performed separately on the left and right sides in the rear. Destination guidance can only be started from the front. Operation is the same as for the front navigation. Su ...

    Entering letters and numbers
    1. Turn the controller: select letters or numbers. 2. Select additional letters or numbers ifneeded. 3. "OK": confirm the entry. Symbol Function Press the controlle ...

    The concept
    The system is functional at speeds beginning at approx. 20 mph/30 km/h. It maintains the speed that was set using the control elements on the steering wheel. The system brakes on downhill gradie ...