Safety

Active head restraints, two-row side curtain airbags, front airbags and side-impact airbags for the front seats are all standard. So is an electronic stability system, antilock brakes and traction control. Like most convertibles, the 135i convertible does not have the curtain airbags; pop-up roll bars deploy behind the rear seats in the event of a rollover.

    See also:

    Buckling the belt
    Make sure you hear the latch plate engage in the belt buckle. ...

    Start/Stop button
    The concept Pressing the Start/Stop button switches the ignition on or off and starts the engine. Automatic transmission: The engine starts if the brake is depressed while pressing the Start/ ...

    Aerodynamic optimisation of underside panelling
    As the excellent drag coefficient (cd = 0.26) would suggest, the aerodynamics of the new BMW 3-Series have been intensively honed in a state-of-the-art wind tunnel. The optimised aerodynamics also ...