2015 head-to-head · Full-Size Pickup
2015 GMC Sierra vs Ram 1500
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
The 2015 Ram 1500 is the cheaper one to run. Driving 15,000 miles a year with $3.10/gal regular gas, it costs about $2,214 a year to fuel (21 MPG), versus $2,325 for the 2015 GMC Sierra (20 MPG). That's roughly $111 a year, or about $554 over five years.
Your numbers
Change these to match your driving and local prices. Every figure and chart on this page updates.
Fuel cost over 10 years
- GMC Sierra
- Ram 1500
Side by side
| GMC Sierra | Ram 1500 | |
|---|---|---|
| $2,325 | Your annual fuel cost | $2,214 |
| 20 MPG | Combined efficiency | 21 MPG |
| 18 MPG | City | 18 MPG |
| 24 MPG | Highway | 25 MPG |
| 447 g/mi | Tailpipe CO₂ (g/mi) | 426 g/mi |
| 5/10 | EPA fuel economy score | 5/10 |
| 5/10 | EPA greenhouse gas score | 5/10 |
| Flex-fuel | Powertrain | Gas |
| Regular gasoline or E85 | Fuel | Regular gasoline |
| 4.3L 6-cyl | Engine / motor | 3.6L 6-cyl |
| 6-speed automatic | Transmission | 8-speed automatic |
| RWD | Drivetrain | RWD |
✓ marks the better value. EPA scores run 1–10 (10 is best). Volumes come from the EPA interior volume index and aren't published for every body style.
GMC Sierra vs Ram 1500 across model years
- GMC Sierra
- Ram 1500
Annual fuel cost of the most efficient configuration of each model year, at your prices. Click a point to open that year.
How they differ
Among 7 2015 full-size pickups, the GMC Sierra ranks 4th and the Ram 1500 2nd for lowest fuel cost.
The powertrains differ: the GMC Sierra is a flex-fuel model, while the Ram 1500 is a conventional gas model.
Frequently asked questions
Which is more fuel-efficient, the 2015 GMC Sierra or the 2015 Ram 1500?
Measured by cost to drive, the Ram 1500. The GMC Sierra is rated 20 MPG combined and the Ram 1500 21 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2015 GMC Sierra vs. the Ram 1500 per year?
At 15,000 miles a year with $3.10/gal regular gas, about $2,325 for the GMC Sierra and $2,214 for the Ram 1500.
GMC Sierra vs Ram 1500 in other years
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