The 2020 Chevrolet Silverado 1500 has just earned serious bragging rights as the most fuel-efficient full-size truck on the market. This is achieved with the newly available 3.0-liter Duramax turbodiesel inline-six, which has an EPA-estimated fuel economy rating of 23 miles per gallon in the city and 33 mpg on the highway for rear-wheel-drive models. If you upgrade to 4-wheel drive, it’s 23 mpg city/29 mpg hwy, which is still very impressive.
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