On display for the first time at Villa d'Este in Italy ahead of a launch in the coming weeks, the M3 CS adds 39bhp over the already powerful BMW M3 Competition to pip its Italian contemporary by 10bhp.
Its twin-turbocharged 3.0-litre straight six, an uprated version of the same engine found in the standard BMW M3 and BMW M4, can propel the M3 CS to 62mph from a standstill in just 3.4sec – 0.2sec quicker than the Giulia GTA.
Read more: 2023 BMW M3 CS review
Accelerating from 50- 75mph takes just 2.6sec and the top speed is electronically limited to 188mph. The straight six is tuned to deliver 479lb ft, which is distributed by BMW’s xDrive four-wheel drive system.
The M3 CS is set apart from the M3 Competition visually by a raft of design tweaks, such as an angrier-looking, open front grille designed to match the front end of BMW’s GT4-spec M4 racer. Gaping air intakes round off the new-look nose. These are joined by a host of items that enhance aerodynamics, such as a wide front splitter and a lipped rear spoiler.
One of the keys to the M3 CS’s lofty performance figures is its lighter body, made through the extensive use of lightweight materials across the car (such as carbon fibre for the roof) and switching out components for lighter alternatives (such as carbon fibre bucket seats and a titanium rear silencer). In total, the M3 CS is 20kg lighter than the 1780kg M3 Competition.
Underneath, the chassis is for the most part the same as the M3 Competition’s, albeit with a bespoke set-up. The M Dynamic driving mode has been geared towards high-speed circuit driving, for example.
Other bespoke touches include individually tuned axle kinematics and bespoke wheel camber settings, dampers, auxiliary springs and anti-roll bars, the M3 CS featuring a model-specific suspension set-up.