Now that the full unveiling of the new BMW M4 is complete, engineers are focusing on the more capable CSL. These spy photos show the meanest variant of the coupe on the road.
The face of the CSL looks largely the same except for a much larger front splitter. On the side, the coupe rolls on wheels with a complicated spoke pattern and a bronze finish. The tail carries a more prominent spoiler. The rear diffuser is larger and there are still two sets of double exhausts.
BMW will apparently focus on weight loss for the CSL over the standard coupe. The current lightest model weighs 1,674 kilograms (3,690 pounds), which is 34 kilograms (75 pounds) heavier than the previous M4 Competition with the DCT. The model definitely has some fat to lose.
To reduce the pounds, expect the CSL to make heavy use of lightweight materials. The model could use the six-speed manual transmission and rear-wheel drive for a more driver-focused setup. BMW could also remove some of the more luxurious amenities from the cabin. The company can boost the output of the twin-turbo inline-six engine beyond the 503 horsepower (375 kilowatts) of the existing M4 competition.
Production of the M4 CSL will begin in July 2022. The company will only build it for a short time. The total volume may be as low as 1000 units. There is no mention of a matching M3 CSL sedan yet.
Rear-wheel drive versions of the M3 and M4 began shipping in March 2021. The all-wheel drive version of the Competition models will arrive in dealerships this summer.