Introduced in 2006, the souped-up hardtop version of the Z4, with the same 330 horsepower engine and suspension set-up of the Z4 M Roadster, is an unabashed track car. It makes no apologies for its hard ride, engine and tire noise, and lack of sound-proofing, but in return provides the Roundel enthusiast with a good basis for improving driving skills at BMW Car Club track events.

Known simply as the "M Coupe," this track rat is only available with BMW's 3.2-liter inline six putting out 330 horsepower at 7900 rpm and 262 pound-feet of torque at 4900 rpm. Appropriate to its track use, it comes standard with BMW's satisfying six-speed manual transmission, vented cross-drilled brakes, and sport suspension on 18-inch alloy wheels with 225mm front tires and 245mm rear tires.

Weighing in at just over 3000 pounds, the car is quick off the mark and fast in passing conditions. Though handling is responsive and satisfying, especially on smooth track surfaces, reviewers note that ride quality suffers on normal freeway pavement. To keep weight down, the car has little sound-proofing, and the coupe top acts as a sound resonator which amplifies any road noise, and makes casual conversation at speed all but impossible.

The once-controversial blade-edged BMW styling is now familiar, having been introduced on the Z4 roadster, and is capped by a tightly-drawn coupe top that has two subtle domes recalling the "double-bubble Zagatos" with tops molded to provide clearance for racing helmets. The top ends in a raked hatchback with limited rear overhang, creating an overall look of muscular performance.

On the interior, the fat steering wheel and bucket seating with supportive side bolsters is perfect for track driving and enthusiastic backroads curve-carving. Space inside, however, is cramped and only 12 cubic feet of luggage can be squeezed under the hatch.

But this car was never designed for long-distance touring. The limited luggage space isn't likely to matter much, since a driving helmet, Pilotes and some overnight gear are likely to be all that the driver will ever want to carry in this no-excuses sports car.