Vehicle Overview

The rear-wheel-drive BMW 1 Series enters its fifth year on the market with a few visual changes, as well as a new higher-performance version from BMW's M division, dubbed the 1 Series M. Above the entry-level 128i is the 135i, whose compact dimensions and two-door layout give it few genuine competitors. The car comes as a coupe or convertible; shoppers might cross-shop the 135i with the Nissan 370Z, Infiniti G37 coupe or top-end versions of Detroit's muscle cars.

The 128i is covered separately in Cars.com's Research section.

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    Tilt alarm sensor
    The tilt of the vehicle is monitored. The alarm system responds in situations such as attempts to steal a wheel or when the car is towed. ...

    Child seat security
    The rear safety belts and the front passenger safety belt can be locked against pulling out for mounting the child restraint fixing systems. Locking the safety belt 1. Pull out the belt webbin ...

    The concept
    If the vehicle is equipped with Active Cruise Control with Stop & Go, the collision warning is controlled via the cruise control radar sensor. The system issues a two-phase warning of a dan ...