2007 GMC Sierra C15
17MPG
Combined
6
Trims
2007
2008 →
Updated February 27, 2026
The 2007 GMC Sierra C15 is a Truck that delivers 15–17 combined MPG depending on trim. Here’s everything you need to know about this vehicle, from fuel economy to safety ratings.
2007 GMC Sierra C15 Specifications
| Spec | Value |
|---|---|
| Combined MPG | 15–17 combined MPG depending on trim |
| City MPG | 15 |
| Highway MPG | 20 |
| Body Style | Truck |
| Fuel Type | Regular |
| Drive | RWD |
| Available Trims | 6 |
Available Trims
| Trim | MPG (City/Hwy/Combined) | Engine | Transmission |
|---|---|---|---|
| Auto | 15/19/17 | 4.3L 6cyl | Automatic 4-spd |
| Auto | 14/19/16 | 4.8L 8cyl | Automatic 4-spd |
| Auto | 15/20/17 | 5.3L 8cyl | Automatic 4-spd |
| Auto | 13/18/15 | 6.0L 8cyl | Automatic 4-spd |
| Auto | 14/20/16 | 5.3L 8cyl | Automatic 4-spd |
| Auto | 12/19/15 | 6.2L 8cyl | Automatic 6-spd |
Annual Fuel Cost
Based on EPA estimates, the 2007 GMC Sierra C15 costs approximately $2,925 per year in fuel. This assumes 15,000 miles driven annually and current fuel prices.
Compare the 2007 GMC Sierra C15
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Other Model Years
- 2018 GMC Sierra C15
- 2017 GMC Sierra C15
- 2016 GMC Sierra C15
- 2015 GMC Sierra C15
- 2014 GMC Sierra C15
- 2013 GMC Sierra C15
- 2012 GMC Sierra C15
- 2011 GMC Sierra C15
- 2010 GMC Sierra C15
- 2009 GMC Sierra C15
- 2008 GMC Sierra C15
- 2007 (this page)
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