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.

Porsche 911 GT3 RS 4.0 (2011)
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Mercedes-Benz C 63 AMG Coupe Black Series (2012)
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BMW M3 GTS (2010)
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Source: drive via Youtube