July 25, 20196 yr Moderators After more than 18 months of waiting since the product was first announced, Chevrolet finally released official efficiency numbers for the 2020 Silverado 1500 with the all-new turbodiesel 3.0L I-6. Silverado 1500 Duramax fuel economy is pegged at an astounding 23 city/33 highway mpg in two-wheel-drive configurations and 23 city/29 highway mpg for four-wheel-drive trucks, View the full article
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