GM 6.2L EcoTec V8 rated at 21 mpg by the EPA

General Motors is already laying claim to best-in-class power for its new 6.2-liter V8 that will be offered in the 2014 Chevy Silverado and GMC Sierra this fall, and now it has released fuel economy numbers for the big engine. Available as an option on the Silverado LTZ and High Country (shown above) models as well as the Sierra SLT and Denali trims, the 6.2L EcoTec3 V8 will return 15 miles per gallon in the city and 21 mpg on the highway on rear-wheel-drive trucks; these numbers drop by one mpg each on four-wheel-drive models. New Chevrolet, GMC light duty pickups also deliver best towing capacity in class and strong fuel economy.

Autoblog , GM 6.2L EcoTec V8 rated at 21 mpg by the EPA, GM 6.2L EcoTec V8 rated at 21 mpg by the EPA