Ford has managed to eke out an extra two miles per gallon on the highway from the heavily revised 2010 Shelby GT500, bringing its EPA estimated figures to 14 mpg city and 22 mpg highway. Sure, it seems rather unlikely that buyers looking at a muscle car will be all that concerned with fuel economy, but as much as we'd prefer the figures to be significantly higher, we're not ones to turn down a few free miles per gallon. Of course, the reason this car exists isn't to save on fuel bills. This being the case, the fuel economy improvement is accompanied by a bump up to 540 horsepower and a stump-pulling 510 lb-ft of torque, which is enough blast the GT500 to 60 miles per hour in just 4.3-seconds.
In fact, as is often the case, the revisions that make the latest Shelby more fuel efficient also also end up contributing to its improved ability to accelerate. The biggest change that helps on the highway is numerically lower gearing in the transmission for the fifth and sixth cogs, which, combined with a 3.55:1 axle ratio, allows the big 'Stang to boast improved acceleration in the first four gears to go along with the lowered RPM highway drone made possible by the last two gears.
Ford also points to a refined air intake and a revised twin-disc clutch as reasons the 2010 Shelby GT500 is a step above its predecessor, and we also took note of the vastly superior interior that's standard in all new Mustangs when we last took a look at the GT500.
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