These leaked images show the hot new BMW 3-series that is being launched to bridge the gap between the 335i and M3 models.
However, the BMW 335iS will not initially be made available in the UK or Europe, however, with the firm instead selling it to US and Canadian customers.
BMW showed a similar concept with the Z4 at the Detroit motor show with the Z4 sDrive 35iS, billed as the most powerful in the range in the absence of a full M version.
The 335iS will use the 322bhp N44 twin-turbo six-cylinder 3.0-litre engine with 332 lb ft of peak torque (369 lb ft with the overboost function).
The car will get an M-sport styling package and will be the first time a standard BMW model will be offered with an optional seven-speed double clutch gearbox. When equipped with the auto’, the 335iS can get from 0-60mph in 5.0secs, with the same speed arriving 0.1secs slower with the standard six-speed manual.
Top speed will be limited to 149mph – standard BMW’s in the US are normally limited to 130mph.
A BMW source had indicated that the car will be considered for European sale after reaction to it has been gauged in the US and Canada.