When it comes to BMW's performance cars, the company has underwent a bit of a revolution. Why? Well, let's see.

There's all-wheel drive M cars, the manual transmission has to be requested these days and the steering isn't quite the same as it use to be. One thing hasn't changed, however. That would be the gobs of power and the thrill a driver gets behind the wheel.

But, what about when there's a confusion choice, as seen with the Alpina B6 and BMW M6 Gran Coupe? They're both very similar on paper, yet there's something different going on underneath the sheets.

That said, WHICH one would be your speed?

Watch Motor Trend's review of both vehicles below and let us know WHICH BMW has YOUR vote!

This is a special Head 2 Head presented by Tire Rack (, because we’re comparing two cars that look nearly identical on the outside. They’re both 600hp BMW 6-Series Gran Coupes, but the similarities between the B6 and M6 start to fade after that. The Alpina B6 is a well-rounded, incredibly fast luxury car with all-wheel drive, smooth suspension, and an eight-speed torque-converter automatic. The BMW M6 is a motorsports-bred, rear-wheel-drive monster with a seven-speed dual-clutch transmission, quick-ratio steering, and suspension that favors handling over ride quality. Motor Trend Senior Features Editors Jason Cammisa and Jonny Lieberman spend time with both to decide which makes the better Gran Coupe. Then, with the help of hall-of-fame race car driver Randy Pobst, we find out which four-door coupe is faster around the track. This episode has it all—burnouts, drag races, hot laps, and backseat drivers.

CAR WARS! Sibling Rivalry: BMW's M6 Gran Coupe Squares Off Against The Alpina B6

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