| Engines | EPA Estimated Fuel Economy (city/hwy) |
Fuel Tank Capacity (gallons) |
|
|---|---|---|---|
| 2WD Models | Vortec 4800 V8 | 14/19 | 26 |
| 2WD Models | Vortec 5300 V8 with Active Fuel Management | 14/20 | 26 |
| 2WD Models | Vortec 5300 V8 XFE | 15/21 | 26 |
| The 2009 Yukon Vortec 5300 V8 with Active Fuel Management has better available fuel economy than any other competitor.** | |||
| 2WD Models | Vortec 5300 V8 FlexFuel with Active Fuel Management | Gasoline: 14/20 E85: 11/15§§§ |
26 |
| 2WD Model | Vortec 5.3L Flex Fuel V8 Engine | Gasoline: 15/21 | 26 |
| 2WD Model | XFE Model: Vortec 5.3L Flex Fuel V8 Engine | Gasoline: 15/21 | 26 |
| 4WD Models | Vortec 5300 V8 FlexFuel with Active Fuel Management | Gasoline: 14/19 E85: 11/14§§§ |
26 |