GMC · 2005 · Natural gas
GMC Sierra CNG MPG by year
The EPA has rated 1 model year of the GMC Sierra CNG (2005). The most fuel-efficient year is the 2005, at 9 MPGe combined in its best configuration. The 2005 model is about as efficient as the median full-size pickup (9 MPGe).
Latest (2005)9 MPGe$4,833/yr to fuel
First rated (2005)9 MPGe$4,833/yr at today's prices
Model years rated12 configurations
Every Sierra CNG model year
| Year | Type | Best combined | City / Hwy | Class median | Range | Configs | Fuel / yr |
|---|---|---|---|---|---|---|---|
| 2005 | Natural gas | 9 MPGe | 8 / 11 | 9 | — | 2 | $4,833 |
Fuel cost uses today's default prices for every year so model years compare like for like. Sort any column.
Models similar to the GMC Sierra CNG
Other GMC Sierra versions
Frequently asked questions
Which GMC Sierra CNG year has the best fuel economy?
The 2005 GMC Sierra CNG, rated up to 9 MPGe combined. At 15,000 miles a year with $2.90/gge natural gas, that works out to about $4,833 a year.
What is the fuel economy of the latest GMC Sierra CNG?
The 2005 GMC Sierra CNG is rated up to 9 MPGe combined.