BMW M3 CS Document Leaks Confirm US Version, 543-HP Power Output

The other day, another batch of documents leaked with information about the upcoming BMW M3 CS. The latest news may please Bimmer fans in the US as it confirms the arrival of a beefed up M3 across the pond.

Leaked documents in BimmerPost the forum has three codes: two for Europe and one for the US. The left-hand drive M3 CS for Europe is codenamed 61AY, while the right-hand drive model is codenamed 62AY. Meanwhile, the US LHD version comes with code 63AY. There is no difference between the three codes, except for the orientation of the rudder.

The newly leaked documents also confirm what we knew before. The new BMW M3 CS G80 will be powered by the same engine found in the M4 CSL – the factory S58 twin-turbo 3.0-liter inline-six. The document reveals that the power output will be 405 kilowatts or 543 horsepower, which should match the current power output of the limited M4 CSL. That said, torque figures are expected to be 479 pound-feet (650 Newton-meters) as well.

Unlike the rear-wheel drive M4 CSL, both previous reports and new leaks confirm that the new M3 CS will have xDrive, meaning all four wheels will be driven by the engine.

Interestingly, the transmission is presented with a question mark in the leaked documents. Previous reports stated that it will arrive with an automatic transmission. As for the interior, our spies have caught on to the M3 CS with front bucket seats as standard equipment. Found in the 3 Series mid-cycle refresh, BMW’s iDrive system on OS 8 is expected in the M3 CS.

Previous reports indicated that the M3 CS will be in limited production starting from March 2023 to February 2024; a new leak supports this information. This means a reveal may be imminent. The only question now is when.

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