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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    For better control
    The indicator lamp flashes: DSC controls the drive forces and brake forces. The indicator lamp lights up: DSC and DTC has failed. DSC deactivated: The indicator lamp lights up and DSC O ...

    Drive away without delay
    Do not wait for the engine to warm up while the vehicle remains stationary. Start driving right away, but at moderate engine speeds. This is the fastest way for the cold engine to reach its ope ...

    Switching on automatically
    Select transmission position R with the engine running. The backup camera image is displayed if the system was switched on via the iDrive. ...