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 level
    Checking 1. Let the engine cool. 2. The coolant level is correct if it lies between the minimum and maximum marks. The marks are on the side of the coolant reservoir. Adding engine oil 1. Let ...

    Instrument cluster
    At a glance 1 Fuel gauge 2 Speedometer 3 Indicator/warning lamps 4 Tachometer 5 Engine oil temperature 6 Electronic displays 7 Reset miles ...

    Tire inflation pressure
    Safety information The tire characteristics and tire inflation pressure influence the following: ▷ The service life of the tires. ▷ Road safety. ▷ Driving comfort. Checking th ...