Exterior

With standard visual cues that come only with the 128i's optional M Sport Package, the 135i has an aggressive front bumper with three large air inlets. Xenon headlights are standard, and they carry a white bordering up top for 2012, mirroring the headlight treatment across most other BMWs. These lights include a string of LEDs embedded in the caps, a visual cue used in the automaker's redesigned 6 Series.

Rather than the 3 Series convertible's folding metal hardtop, the 135i convertible has a fabric soft-top that can open or close in 22 seconds, BMW says. It operates at speeds up to 25 mph.

The 1 Series remains a small car overall, about 2 inches shorter and narrower than a Scion tC. The popular 3 Series coupe, in comparison, measures about 10 inches longer.

    See also:

    Increasing or reducing speed
    The speed can be changed in the range from approx. 4 mph/6 km/h to approx. 15 mph/25 km/ h by pressing the accelerator or brake pedal lightly. A target speed within the same range can be spec ...

    Opening
    The tailgate pivots back and up when it opens. Ensure that adequate clearance is available before opening. Provide edge protection Sharp or angular objects can hit the rear window while drivin ...

    System limits
    Personal responsibility The system cannot serve as a substitute for the driver's personal judgment of the course of the road and the traffic situation. In the event of a warning, do not jerk th ...