Under the Hood

The 135i's turbocharged inline-six makes 300 horsepower and 300 pounds-feet of torque. It works through a six-speed manual or BMW's seven-speed dual-clutch automatic. Either car hits 60 mph in about 5 seconds, BMW says. The M Sport Package adds a sport-tuned suspension with high-performance, six-piston front and two-piston rear brakes.

If that seems like too much, consider stepping down to the 230-hp, normally aspirated 128i, which is covered separately in the Cars.com Research section.

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    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 additives; otherwise, ...

    Manual air distribution
    The air distribution can be adjusted to individual needs. Press the button repeatedly to select a program: Upper body region. Upper body region and footwell. Footwell. ...

    Engine oil temperature
    ► Cold engine: the pointer is at the low temperature end. Drive at moderate engine and vehicle speeds. ► Normal operating temperature: the pointer is in the middle or in the ...