The first photos of the BMW M6 GranCoupe test mule have made their way online.
Spy photographers have just caught the first glimpse of the BMW M6 GranCoupe undergoing some rigorous testing. The high-performance version of the big sedan will come twin-turbocharged and ready to rock the luxury sedan market. The new M6 GranCoupe will rival the Mercedes-Benz CLS63 AMG and it will provide it a bit of a challenge, though it isn't quite as powerful. The BMW sedan will run on a twin-turbocharged 4.4-liter V8 engine, capable of putting out 552hp and 501 lb-ft of torque.
Power will be transferred to the back wheels via a seven-speed dual-clutch transmission. In comparison, the Mercedes-Benz CLS63 AMG puts out 518hp and 516 lb-ft of torque from its biturbo 5.5-liter V8. The muscular M6 GranCoupe can run from rest to 62mph in just under 4.5 seconds and reach a limited top speed of 155mph. It runs those times looking good, with its M-style quad exhausts and body kit. The new BMW M6 GranCoupe should debut later this year and will be launched in 2013.
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