Bursts of Power

The 1M's powertrain is the car's high point, providing ample torque at low engine speeds for a satisfying launch. This twin-turbocharged 3.0-liter inline-six-cylinder produces 335 horsepower at 5,800 rpm and 332 pounds-feet of torque at 1,500 rpm. For comparison, the 335i coupe uses a single-turbo 3.0-liter I-6 with 300 hp and 300 pounds-feet. The displacement and compression ratios are the same, but the 135i's boost pressure is 8.7 psi and the 1M's starts at 11.6 psi. I say "starts" because the 1M's turbo can up the pressure to 14.5 psi for a momentary burst of torque, rated at 370 pounds-feet.

The boost works: Nail the gas pedal at practically any speed in any gear, and after waiting a half-beat you'll feel the additional tug. I'd find this annoying if the initial power were anemic, but you get respectable response even before the surge. The low-rev torque peak that extends from 1,500 rpm all the way to 4,500 rpm continues to surprise anyone who has decades of turbocharger experience. In some ways, I prefer the 1M's ready torque to the M3 V-8's gentle rise. Despite their relatively small displacement, modern turbocharged direct-injection engines deliver the character that many larger, normally aspirated V-8s no longer do. Fantastic.

BMW didn't mess with the 135i's success: It carried over the six-speed manual's gear ratios, a good match for the 1M. The only difference is a shorter final drive ratio of 3.154 in the 1M versus the 135i's 3.077. I prefer the 1M's shifter and clutch over those of the M3, whose stick is rubbery and disconnected and whose clutch pedal presents a peculiar, nonlinear resistance through its motion. The 1M's shifter isn't my favorite, but it is an improvement, and the pedal is consistent. Borrowed from the M3, the brakes — with their 14.2-inch front and 13.8-inch rear cross-drilled rotors — do a stellar job with this lighter car.

    See also:

    The concept
    The integrated universal remote control can operate up to 3 functions of remote-controlled systems such as garage door drives or lighting systems. The integrated universal remote control replac ...

    Calling up information on the info display
    Calling up information on the info display Press the computer button on the turn signal lever. Information is displayed on the info display of the instrument cluster. ...

    Closing the hood
    Let the hood drop from a height of approx. 16 in/ 40 cm and push down on it to lock it fully. The hood must audibly engage on both sides. Hood open when driving If you see any signs that the h ...