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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    Managing the favorites
    Activating/deactivating the favorites Favorites can be activated and deactivated globally and individually. 1. "Satellite radio". 2. "Manage favorites" 3. Select "Acti ...

    Two additional gears mean threefold progress: quicker shifts, greater smoothness, enhanced efficiency.
    The wider spread of ratios allows the engine to run at lower speeds, often in the "tallest" gear, 8th. Yet even with this wider spread, the steps between adjacent gears are reduced; in t ...

    Display on the Control Display
    Display the computer or trip computer on the Control Display. 1. "Vehicle Info" 2. "Onboard info" or "Trip computer" Resetting the fuel consumption or speed 1. &q ...