2006 · Full-Size Pickup · Gas / Flex-fuel
2006 GMC Sierra MPG & fuel economy
The 2006 GMC Sierra is a full-size pickup offered in 15 EPA-rated configurations. The most efficient version returns 17 MPG combined (15 city / 20 highway) on regular gasoline. Across the lineup, combined ratings range from 13 to 17 MPG. Efficiency is unchanged from the 2005 model. Among 22 full-size pickups rated for 2006, it ranks 10th for lowest fuel cost. At 15,000 miles a year with $3.10/gal regular gas, it costs about $2,735 a year to fuel.
What will it cost you?
Your mileage and prices are saved and used across the site.
Fuel average
The 2006 GMC Sierra's fuel average is 7.2 km/L (13.8 L/100 km), or 17 MPG combined: 6.4 km/L in the city and 8.5 km/L on the highway.
| MPG | km/L | L/100 km | |
|---|---|---|---|
| City | 15 | 6.4 | 15.7 |
| Highway | 20 | 8.5 | 11.8 |
| Combined | 17 | 7.2 | 13.8 |
How it ranks among 2006 Full-Size Pickups
Full class ranking →Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.
Sierra MPG across model years
Full history →15 EPA-rated configurations
| Configuration | Type | City | Hwy | Combined | Range | Your cost / yr |
|---|---|---|---|---|---|---|
| RWD · 4.3L 6-cyl · 4-speed automatic Sierra 1500 2WD |
Gas | 15 MPG | 20 MPG | 17 MPG | — | $2,735 |
| RWD · 4.8L 8-cyl · 4-speed automatic Sierra 1500 2WD |
Gas | 15 MPG | 19 MPG | 17 MPG | — | $2,735 |
| RWD · 4.3L 6-cyl · 5-speed manual Sierra 1500 2WD |
Gas | 14 MPG | 20 MPG | 16 MPG | — | $2,906 |
| RWD · 4.8L 8-cyl · 5-speed manual Sierra 1500 2WD |
Gas | 14 MPG | 19 MPG | 16 MPG | — | $2,906 |
| RWD · 5.3L 8-cyl · 4-speed automatic Sierra 1500 2WD |
Gas | 14 MPG | 19 MPG | 16 MPG | — | $2,906 |
| RWD · 5.3L 8-cyl · 4-speed automatic Sierra 1500 2WD |
Flex-fuel | 14 MPG | 19 MPG | 16 MPG | — | $2,906 |
| 4WD/AWD · 4.3L 6-cyl · 4-speed automatic Sierra 1500 4WD |
Gas | 13 MPG | 17 MPG | 15 MPG | — | $3,100 |
| 4WD/AWD · 4.3L 6-cyl · 5-speed manual Sierra 1500 4WD |
Gas | 13 MPG | 18 MPG | 15 MPG | — | $3,100 |
| 4WD/AWD · 4.8L 8-cyl · 4-speed automatic Sierra 1500 4WD |
Gas | 14 MPG | 18 MPG | 15 MPG | — | $3,100 |
| 4WD/AWD · 4.8L 8-cyl · 5-speed manual Sierra 1500 4WD |
Gas | 14 MPG | 18 MPG | 15 MPG | — | $3,100 |
| 4WD/AWD · 5.3L 8-cyl · 4-speed automatic Sierra 1500 4WD |
Gas | 13 MPG | 18 MPG | 15 MPG | — | $3,100 |
| 4WD/AWD · 5.3L 8-cyl · 4-speed automatic Sierra 1500 4WD |
Flex-fuel | 13 MPG | 17 MPG | 15 MPG | — | $3,100 |
| RWD · 6.0L 8-cyl · 4-speed automatic Sierra 1500 2WD |
Gas | 13 MPG | 18 MPG | 15 MPG | — | $3,950 |
| 4WD/AWD · 6.0L 8-cyl · 4-speed automatic Sierra 1500 4WD |
Gas | 13 MPG | 16 MPG | 14 MPG | — | $4,232 |
| 4WD/AWD · 6.0L 8-cyl · 4-speed automatic Sierra 1500 AWD |
Gas | 12 MPG | 16 MPG | 13 MPG | — | $4,558 |
Specs (most efficient configuration)
- Fuel
- Regular gasoline
- Engine / motor
- 4.3L 6-cyl
- Transmission
- 4-speed automatic
- Drivetrain
- RWD
- Tailpipe CO₂
- 523 g/mi
2006 GMC Sierra vs. rivals
Compare the 2006 Sierra
With any other car from any year, including other Sierra model years. Type a year to jump, e.g. "2015 Accord".
Same year, other powertrains: 2006 GMC Sierra Hybrid (17 MPG)
Frequently asked questions
What is the gas mileage of the 2006 GMC Sierra?
Up to 17 MPG combined (15 city / 20 highway); ratings range from 13 to 17 MPG depending on configuration.
What fuel does the 2006 GMC Sierra use?
Regular gasoline.
What is the fuel average in km/L for the 2006 GMC Sierra?
The 2006 GMC Sierra's fuel average is 7.2 km/L (13.8 L/100 km), or 17 MPG combined: 6.4 km/L in the city and 8.5 km/L on the highway.
How much does it cost to fuel the 2006 GMC Sierra per year?
About $2,735 at 15,000 miles a year with $3.10/gal regular gas, or $18.24 per 100 miles. Use the calculator on this page to plug in your own mileage and prices.