2013 Ford Shelby GT500

2013 Ford Shelby GT500 is fuel-economy leader

With 662 horsepower, the 2013 Ford Shelby GT500 is the world’s most powerful series production V-8, and is the most fuel-efficient car in its segment.

When Ford revealed that the 2013 Ford Shelby GT500 was officially certified at 662 horsepower and 631 lb-ft. of torque, GT500 fans got excited that the all-new supercharged V-8 was the most powerful production V-8 car in the world. It beat its two biggest rivals, the 2012 Chevrolet Corvette ZR1 by 24 horsepower, and the 2012 Camaro ZL1 by 82 hp.

Now Ford Shelby GT500 fans have something else to cheer about. In a press release on Wednesday, Ford revealed that even though the 2013 GT500 has 112 more horsepower than the 2012 model, fuel economy has increased in the new muscle car by 1 mpg in both city and highway numbers. Ford says the new 2013 GT500 is the most fuel-efficient car in the segment in cars developing over 550 horsepower.

The 2013 Shelby GT500 gets an EPA-estimated 15 mpg city, 24 mpg highway and 18 mpg combined with no gas guzzler tax. Even with an extra 82 horsepower and 75 lb.-ft. being generated under the hood, that’s 5 mpg better on the highway than the 2012 Chevrolet Camaro ZL1.

Given the huge bump in horsepower from the previous model, the 1 mpg seems like quite a significant achievement for Ford engineers. So how did they achieve the increase without changing the gearing and sacrificing performance on the low end? Ford engineers redesigned the 5.8-liter V-8 to generate 395 lb.-ft. of torque at 1,000 rpm right off of idle. And most of the torque kicks in from 2,200 to 5,800 rpm to allow the GT500 massive acceleration off the line.


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Did they also give it independent rear suspension? Or is it still an livea rear axle?