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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    Coolant
    General information Danger of burns from hot engine Do not open the cooling system while the engine is hot; otherwise, escaping coolant may cause burns. Suitable additives Only use suitable ...

    Safety
    The BMW 5 Series has earned Top Safety Pick status from the Insurance Institute for Highway Safety for top scores in frontal, side and rear crash tests and a roof-strength test that reflects rollo ...

    Switching on/off manually
    Switching on/off manually Press the button. ...