The M4 is an evolution of BMW's 4 Series and is available as either a coupe or a folding-hardtop convertible. Running gear is suitably enhanced compared to its more mainstream sister, with the driveline and chassis receiving a long list of significant upgrades—from a massive power boost through to the requisite big tires—and the bodywork updated to include appropriate extensions and vents where Teutonic logic deemed them necessary.
A twin-turbocharged 3-liter inline-6—impress your business partners and call it by its in-house code, S55—makes 425 horsepower and 406 pound-feet of torque which is sent to a trick computer-controlled differential at the rear wheels through either a six-speed manual transmission or BMW's dual-clutch semiautomatic gearbox. An adaptive suspension system is available for $1,000 but the standard setup is so well-tuned that we call the extra expense and complexity unnecessary.
Base MSRP is $65,700 for the coupe and $74,200 for the droptop (maybe we should call it the foldtop?); add $995 for delivery in either case. The option list for each version is short, with packages drawing the lines between between greater speed and greater convenience and individual items mostly allowing for some visual personalization.
- The Competition Package ($5,500 for the coupe, $500 less for the convertible) adds a power boost, 20-inch forged-alloy snowflake-design wheels and a battery of revised suspension and driveline settings to better terrify your passengers during track days and on back roads.
- If your tastes run more towards highline than racing line, an Executive Package (head-up display, heated steering wheel, parking sensors) and Driver Assistance Plus (blind spot sensors, lane-departure and collision-avoidance assists, 360° cameras) are available.
- A sunroof is a no-cost option on the coupe, but choosing to let light in means you lose some lightness—the roof panel reverts to standard 4-Series metal instead of carbon fiber.