The 2025 BMW M4 CS is a Lightweight Carbon-Packed Track Monster

BMW has gotten plenty of mileage from its inline-six engines, but it’s not done yet. The 2025 M4 CS will debut on May 10, sporting a 543-horsepower turbocharged engine, plenty of carbon fiber-reinforced plastics, and chassis reinforcements to give it razor-sharp handling.

The $124,675 coupe uses BMW’s S58 inline-six-cylinder engine, which also powers the M4 GT3 race car that won the DTM title in 2022. It uses a 3D-printed cylinder head core that improves cooling, and the oil system has been revised to maintain lubrication during high revs and aggressive cornering. The engine has 20 more horsepower than the M4 Competition Coupe, which BMW said is due to it cranking the turbos up to 30.5 psi. It also makes 479 pound-feet of torque and sports a 7,200 rpm redline. That power hits all four wheels through an eight-speed automatic transmission, an active M differential, and BMW’s xDrive AWD system.

An M4 CS-specific adaptive M suspension system provides adjustable damping settings, and forged alloy wheels reduce unsprung weight. Track tires or ultra-track tires are available as no-cost options.

BMW employed carbon fiber-reinforced plastic and full carbon fiber to cut the car’s weight. It features a carbon roof, while the hood, front air intakes, mirror caps, rear diffuser, and rear spoiler are made from the carbon-plastic composite. Even the exhaust is lighter, cutting eight pounds from the car with a titanium muffler, and BMW said the M4 CS is 77 pounds lighter overall than the M4 Comp.

Interior features include an Alcantara-wrapped steering wheel and the automaker’s annoyingly ass-crunching M Carbon Bucket Seats. The fact that they’re upholstered in Merino leather is nice, but most of us are too wide to fit into them without significant discomfort. BMW’s iDrive 8.5 infotainment software runs on a 12.3-inch digital gauge cluster and 14.9-inch touchscreen, and the car gets unique widgets to monitor and manage its performance.

[Images: BMW]

Become a TTAC insider. Get the latest news, features, TTAC takes, and everything else that gets to the truth about cars first by  subscribing to our newsletter.