2013 GMC Gas Mileage Charts
| Year | Manf. | Model | Engine | Disp. | Trans. | City | Hwy. | Comb. | Fuel |
| 2013 | GMC | Acadia AWD | 6 cyl. | 3.6 liter | Auto 6-spd | 16 | 23 | 18 | Regular |
| 2013 | GMC | Acadia FWD | 6 cyl. | 3.6 liter | Auto 6-spd | 17 | 24 | 19 | Regular |
| 2013 | GMC | Savana 1500 2WD Conversion (cargo) | 8 cyl. | 5.3 liter | Auto 4-spd | 13 | 17 | 14 | FlexFuel |
| 2013 | GMC | Savana 1500 AWD (cargo) | 8 cyl. | 5.3 liter | Auto 4-spd | 13 | 17 | 14 | FlexFuel |
| 2013 | GMC | Savana 1500 AWD Conversion (cargo) | 8 cyl. | 5.3 liter | Auto 4-spd | 13 | 17 | 14 | FlexFuel |
| 2013 | GMC | Savana 1500 2WD (cargo) | 6 cyl. | 4.3 liter | Auto 4-spd | 15 | 20 | 17 | Regular |
| 2013 | GMC | Savana 1500 2WD (cargo) | 8 cyl. | 5.3 liter | Auto 4-spd | 13 | 18 | 15 | FlexFuel |
| 2013 | GMC | Savana 1500 2WD (Passenger) | 8 cyl. | 5.3 liter | Auto 4-spd | 13 | 17 | 14 | FlexFuel |
| 2013 | GMC | Savana 1500 AWD (Passenger) | 8 cyl. | 5.3 liter | Auto 4-spd | 13 | 17 | 14 | FlexFuel |
| 2013 | GMC | Savana 2500 2WD (Passenger) MDPV | 8 cyl. | 4.8 liter | Auto 6-spd | 11 | 17 | 13 | FlexFuel |
| 2013 | GMC | Savana 2500 2WD (Passenger) MDPV | 8 cyl. | 6 liter | Auto 6-spd | 11 | 16 | 13 | FlexFuel |
| 2013 | GMC | Savana 2500 2WD Conversion (cargo) MDPV | 8 cyl. | 6 liter | Auto 6-spd | 10 | 15 | 12 | FlexFuel |
| 2013 | GMC | Savana 3500 2WD (Passenger) MDPV | 8 cyl. | 4.8 liter | Auto 6-spd | 11 | 17 | 13 | FlexFuel |
| 2013 | GMC | Savana 3500 2WD (Passenger) MDPV | 8 cyl. | 6 liter | Auto 6-spd | 11 | 16 | 12 | FlexFuel |
| 2013 | GMC | Sierra 15 Hybrid 2WD | 8 cyl. | 6 liter | Auto (CVT) | 20 | 23 | 21 | Regular |
| 2013 | GMC | Sierra 15 Hybrid 4WD | 8 cyl. | 6 liter | Auto (CVT) | 20 | 23 | 21 | Regular |
| 2013 | GMC | Sierra C15 2WD | 6 cyl. | 4.3 liter | Auto 4-spd | 15 | 20 | 17 | Regular |
| 2013 | GMC | Sierra C15 2WD | 8 cyl. | 5.3 liter | Auto 6-spd | 15 | 21 | 17 | FlexFuel |
| 2013 | GMC | Sierra C15 2WD | 8 cyl. | 4.8 liter | Auto 4-spd | 14 | 19 | 16 | FlexFuel |
| 2013 | GMC | Sierra C15 2WD | 8 cyl. | 6.2 liter | Auto 6-spd | 13 | 18 | 14 | FlexFuel |
| 2013 | GMC | Sierra C15 XFE 2WD | 8 cyl. | 5.3 liter | Auto 6-spd | 15 | 22 | 18 | FlexFuel |
| 2013 | GMC | Sierra K15 4WD | 6 cyl. | 4.3 liter | Auto 4-spd | 14 | 18 | 15 | Regular |
| 2013 | GMC | Sierra K15 4WD | 8 cyl. | 5.3 liter | Auto 6-spd | 15 | 21 | 17 | FlexFuel |
| 2013 | GMC | Sierra K15 4WD | 8 cyl. | 4.8 liter | Auto 4-spd | 13 | 18 | 15 | FlexFuel |
| 2013 | GMC | Sierra K15 4WD | 8 cyl. | 6.2 liter | Auto 6-spd | 12 | 18 | 14 | FlexFuel |
| 2013 | GMC | Sierra K15 AWD | 8 cyl. | 6.2 liter | Auto 6-spd | 12 | 18 | 14 | FlexFuel |
| 2013 | GMC | Terrain AWD | 4 cyl. | 2.4 liter | Auto 6-spd | 20 | 29 | 23 | Regular |
| 2013 | GMC | Terrain AWD | 4 cyl. | 2.4 liter | Auto 6-spd | 20 | 29 | 23 | FlexFuel |
| 2013 | GMC | Terrain AWD | 6 cyl. | 3.6 liter | Auto 6-spd | 16 | 23 | 19 | Regular |
| 2013 | GMC | Terrain AWD | 6 cyl. | 3.6 liter | Auto 6-spd | 16 | 23 | 19 | FlexFuel |
| 2013 | GMC | Terrain FWD | 4 cyl. | 2.4 liter | Auto 6-spd | 22 | 32 | 26 | Regular |
| 2013 | GMC | Terrain FWD | 6 cyl. | 3.6 liter | Auto 6-spd | 17 | 24 | 20 | Regular |
| 2013 | GMC | Terrain FWD | 4 cyl. | 2.4 liter | Auto 6-spd | 22 | 32 | 26 | FlexFuel |
| 2013 | GMC | Terrain FWD | 6 cyl. | 3.6 liter | Auto 6-spd | 17 | 24 | 20 | FlexFuel |
| 2013 | GMC | Yukon 1500 2WD | 8 cyl. | 5.3 liter | Auto 6-spd | 15 | 21 | 17 | FlexFuel |
| 2013 | GMC | Yukon 1500 2WD | 8 cyl. | 6.2 liter | Auto 6-spd | 14 | 18 | 16 | FlexFuel |
| 2013 | GMC | Yukon 1500 4WD | 8 cyl. | 5.3 liter | Auto 6-spd | 15 | 21 | 17 | FlexFuel |
| 2013 | GMC | Yukon 1500 Hybrid 2WD | 8 cyl. | 6 liter | Auto (CVT) | 20 | 23 | 21 | Regular |
| 2013 | GMC | Yukon 1500 Hybrid 4WD | 8 cyl. | 6 liter | Auto (CVT) | 20 | 23 | 21 | Regular |
| 2013 | GMC | Yukon Denali 1500 AWD | 8 cyl. | 6.2 liter | Auto 6-spd | 13 | 18 | 15 | FlexFuel |
| 2013 | GMC | Yukon Denali 1500 Hybrid 4WD | 8 cyl. | 6 liter | Auto (CVT) | 20 | 23 | 21 | Regular |
| 2013 | GMC | Yukon XL 1500 2WD | 8 cyl. | 5.3 liter | Auto 6-spd | 15 | 21 | 17 | FlexFuel |
| 2013 | GMC | Yukon XL 1500 2WD | 8 cyl. | 6.2 liter | Auto 6-spd | 14 | 18 | 16 | FlexFuel |
| 2013 | GMC | Yukon XL 1500 4WD | 8 cyl. | 5.3 liter | Auto 6-spd | 15 | 21 | 17 | FlexFuel |
| 2013 | GMC | Yukon XL 1500 AWD | 8 cyl. | 6.2 liter | Auto 6-spd | 13 | 18 | 14 | FlexFuel |
| 2013 | GMC | Yukon XL 2500 2WD | 8 cyl. | 6 liter | Auto 6-spd | 10 | 16 | 12 | Regular |
| 2013 | GMC | Yukon XL 2500 4WD | 8 cyl. | 6 liter | Auto 6-spd | 10 | 15 | 12 | Regular |
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– by Daniel Gray