
BMW has teased a single darkened image of a new derivative of the M4 coupe.
Based on the hard-core new M4 GTS, the new M4 CS has been created for the Spanish market where there was demand for a “more civilised” version of the track day warrior.
Biggest change of the GTS is the engineers have re-added the second row of seats that were junked from the GTS to save weight and make room for an optional roll-cage.
That means the CS won’t be quite as light as the GTS that tips the scales at 1510kg, but still should be lighter than the regular car thanks to its carbon-fibre body panels and lighter carbon-ceramic brake discs (visible from the tease).
It’s not been confirmed, but it’s thought the CS will get a development of the water-injected 3.0-litre straight-six that powers the GTS but will develop less than the 368kW/600Nm the most extreme M4 produces.
If that’s the case, along with the added weight, the CS won’t match the GTS’ 0-100km/h time of 3.8 seconds.
BMW has also confirmed the CS will have a slower top speed of 280km/h -- 25km/h less than the 305km/h top speed the M4 GTS has.
Just 60 M4 CS models will be sold in Spain. It’s not known how much they’ll sell for.
It’s hoped the M4 CS might be rolled out to other markets, including Australia, where the standard M4 GTS goes on sale in coming months.
It’s not the first time BMW has offered a tamer version of its most extreme small coupe.
Back in 2005, BMW M division followed up the 2003 M3 CSL with a more useable M3 CS that included the CSL’s larger brakes, steering rack, lightweight wheels and other bolt-on parts but missed out on the more powerful engine upgrades.