Here is an epic battle between three awesome sports cars – Porsche GT3 RS 4.0, BMW M3 GTS and Mercedes-Benz C63 AMG Black Series.
The Porsche is powered by a naturally aspirated flat-six with 125HP (92 kW) hp/liter. This means 500HP (368 kW) and 460Nm (339 lb-ft) of torque from the 4.0 liter six-cylinder. It is mated to a 6-speed sport gearbox. The curb weight of the vehicle is just 1370 kg (3000 lbs). 0-100 km/h in 3.9 seconds and top speed of 311 km/h (193 mph).
The BMW has an updated version of the M3 engine – a hi-revving 4.4 liter V8 with 450HP (331 kW) at 8300RPM and 475Nm (325 lb-ft) at 3750RPM. The engine is mated to a re-tuned 7-speed M Dual Clutch Transmission with Drivelogic. 0-100 km/h in 4.4 seconds and a top speed of 305 km/h (190 mph). The total weight is 1530kg.
The Mercedes has a 6.2 liter V8 AMG engine with 517HP (380 kW) and 620Nm (460 lb-ft). It is coupled to an AMG SPEEDSHIFT MCT 7-speed sports transmission with four driving modes. 0-100 km/h in 4.2 seconds and a top speed of 300 km/h (186 mph).
Which is best? Check out in the video below.
httpv://www.youtube.com/watch?v=FSaN8FS-GV8
Source: drive via Youtube
BMW has announced its line-up for the 2011 Goodwood Motorsport Press Day, which will showcase some of the brands most intriguing motoring masterpieces, including the new BMW 1 Series M Coupe and M3 GTS. 
BMW has exclusively announced July 2010 as a German market start of the brand-new top-of-the-range version of the BMW M3 high-performance sports car – BMW M3 GTS. 
BMW M3 GTS is ready to hit the market in spring 2010. The new lightweight model GTS is based on BMW M3 Coupe. The car is mainly hand-built by the most skilled craftsmen at BMW M GmbH.