For the 2009 model year, the GMC Sierra and Chevrolet Silverado XFE took their fuel economy figures up a notch by hitting 21 mpg on the highway and 15 mpg in the city. Apparently, for the 2010 model year, GM has managed to match the highway mileage of their regular non-hybrid pickups to that of their hybrid trucks.

According to PickupTrucks.com, General Motors is upping the EPA numbers for its 2010 XFE Silverado and Sierra to 22 mpg on the highway, which just so happens to match the highway figure for the Sierra Hybrid. The combined fuel economy of both GMT900 trucks has also increased from 17 to 18 mpg.

Chevrolet says that the increased fuel economy is due to several engineering improvements. The XFE model’s 5.3L V8 now has variable valve timing, optimized shift pattens in its six-speed transmission, and new tweaks for its Active Fuel Management system that enables the truck to run on four cylinders at cruising speeds for longer.