BMW fortifies the 2021 M4 with a twin-turbocharged 3.0-liter inline-six engine that is simply perfection. It delivers 473 horsepower at 6,250 rpm and 406 pound-feet of torque from 2,650 rpm to 6,130 rpm. In M4 Competition spec, the figures are 503 hp and 479 lb-ft, but BMW spreads the torque across a smaller rev range between 2,750 and 5,500 rpm. The engine’s redline is a lofty 7,200 rpm, and it is so smooth and eager that banging into it is easy.
The M4 runs to 60 mph in 4.1 seconds with the stick shift, according to BMW, and achieves a top speed of 155 mph or 180 mph, depending on whether you’ve selected the M Driver’s Package. The M4 Competition, with its eight-speed automatic transmission, is quicker to 60, achieving that velocity in 3.8 seconds, per BMW.
Structural bracing, track-ready cooling systems, an electrically-controlled exhaust system, and forged lightweight wheels wrapped in performance tires are standard. Additionally, numerous BMW M tweaks are along for the ride, including an adaptive M suspension, M compound brakes, and M-tuned speed-sensing and variable-ratio steering. In addition, the optional M Drive Professional Package installs a Track driving mode and an M traction control system complete with an M Drift Analyzer function. A set of M Carbon Ceramic Brakes is also available, and if you need to ask what they cost, they’re probably too expensive.
Silky when revved, the twin-turbo straight-six pairs perfectly with the six-speed manual gearbox. The clutch can be a little tricky, but the shifter itself is a delight, recalling BMW manual gearboxes of old. With a bit of resistance with each gear engagement, the stick pops into place with a little bit of a push, gliding into each gear with satisfyingly positive engagement.
Running hard on one of the more challenging roads laced atop the Santa Monica Mountains, the M4’s broad and accessible torque curve meant we mainly shifted between second and third gears, the car shrieking to speed on straights and indefatigably braking hard before diving into corner after corner.
Thanks to bum shoulders, we used the Comfort steering mode instead of the heavier Sport assist level, which also increases feedback, according to BMW. Nevertheless, the electrically-assisted steering proved quick to respond and sharply accurate in its less-aggressive setting, and we didn’t find any reason to complain about how it felt in our hands when driving the M4 on public roads.
Using the car’s Individual driving mode setting, we mixed the Comfort steering and a quieter exhaust setting (no need to advertise speed, now is there?) with Sport powertrain and suspension calibration. The result was a high-performance coupe perfectly suited to rapid transit on our favorite Southern California back roads and a massive smile on your author’s face when it came time to rejoin society on the slog that is the 101 freeway.
Best of all, the BMW M4 isn’t a one-trick pony. The manual transmission is easy to manage in traffic, and the car rides softly enough that you won’t need to visit a chiropractor regularly. Its comfortable standard seats, clear outward visibility, and luxury trappings all make daily driving as enjoyable as it can be.
Overall, this car delivers a marvelous driving experience, regardless of the situation. Incredibly, we averaged 20.2 mpg on our testing loop, too, exceeding the official EPA fuel-economy estimate of 19 mpg in combined driving.