2003 · SUV · Gas / Flex-fuel
2003 Chevrolet Avalanche MPG & fuel economy
The 2003 Chevrolet Avalanche is a SUV offered in 4 EPA-rated configurations. The most efficient version returns 14 MPG combined (12 city / 17 highway) on regular gasoline. Across the lineup, combined ratings range from 13 to 14 MPG. Efficiency is unchanged from the 2002 model. Among 66 SUVs rated for 2003, it ranks 53rd for lowest fuel cost. At 15,000 miles a year with $3.10/gal regular gas, it costs about $3,321 a year to fuel.
What will it cost you?
Your mileage and prices are saved and used across the site.
Fuel average
The 2003 Chevrolet Avalanche's fuel average is 6.0 km/L (16.8 L/100 km), or 14 MPG combined: 5.1 km/L in the city and 7.2 km/L on the highway.
| MPG | km/L | L/100 km | |
|---|---|---|---|
| City | 12 | 5.1 | 19.6 |
| Highway | 17 | 7.2 | 13.8 |
| Combined | 14 | 6.0 | 16.8 |
How it ranks among 2003 SUVs
Full class ranking →Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.
Avalanche MPG across model years
Full history →4 EPA-rated configurations
| Configuration | Type | City | Hwy | Combined | Range | Your cost / yr |
|---|---|---|---|---|---|---|
| RWD · 5.3L 8-cyl · 4-speed automatic Avalanche 1500 2WD |
Gas | 12 MPG | 17 MPG | 14 MPG | — | $3,321 |
| RWD · 5.3L 8-cyl · 4-speed automatic Avalanche 1500 2WD |
Flex-fuel | 13 MPG | 17 MPG | 14 MPG | — | $3,321 |
| 4WD/AWD · 5.3L 8-cyl · 4-speed automatic Avalanche 1500 4WD |
Flex-fuel | 13 MPG | 17 MPG | 14 MPG | — | $3,321 |
| 4WD/AWD · 5.3L 8-cyl · 4-speed automatic Avalanche 1500 4WD |
Gas | 12 MPG | 16 MPG | 13 MPG | — | $3,577 |
Specs (most efficient configuration)
- Fuel
- Regular gasoline
- Engine / motor
- 5.3L 8-cyl
- Transmission
- 4-speed automatic
- Drivetrain
- RWD
- Tailpipe CO₂
- 635 g/mi
2003 Chevrolet Avalanche vs. rivals
Compare the 2003 Avalanche
With any other car from any year, including other Avalanche model years. Type a year to jump, e.g. "2015 Accord".
Frequently asked questions
What is the gas mileage of the 2003 Chevrolet Avalanche?
Up to 14 MPG combined (12 city / 17 highway); ratings range from 13 to 14 MPG depending on configuration.
What fuel does the 2003 Chevrolet Avalanche use?
Regular gasoline.
What is the fuel average in km/L for the 2003 Chevrolet Avalanche?
The 2003 Chevrolet Avalanche's fuel average is 6.0 km/L (16.8 L/100 km), or 14 MPG combined: 5.1 km/L in the city and 7.2 km/L on the highway.
How much does it cost to fuel the 2003 Chevrolet Avalanche per year?
About $3,321 at 15,000 miles a year with $3.10/gal regular gas, or $22.14 per 100 miles. Use the calculator on this page to plug in your own mileage and prices.