2003 Chevrolet TrailBlazer MPG
EPA-rated · verified snapshot 2026-08-30 · Sport Utility Vehicle - 2WD
The 2003 Chevrolet TrailBlazer gets 16 MPG combined — 14 city and 20 highway — in its most efficient configuration (4.2L · 6-cyl · Automatic 4-spd · Rear-Wheel Drive).
City14 MPG
Highway20 MPG
$3,850Fuel cost / yr (EPA est.)
555 g/miCO₂
RegularFuel
$-8,2505-yr fuel cost vs. average vehicle
Where it sits among suvs (2003)
Every 2003 TrailBlazer trim
| Configuration | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|
| 4.2L · 6-cyl · Automatic 4-spd · Rear-Wheel Drive | 14 | 20 | 16 | $3,850 |
| 4.2L · 6-cyl · Automatic 4-spd · 4-Wheel or All-Wheel Drive | 13 | 19 | 15 | $4,100 |
FAQ
How does the 2003 TrailBlazer's fuel economy compare to other suvs?
The 2003 TrailBlazer's 16 MPG combined is below the suvs average of 17 MPG for 2003.
How much does it cost to fuel a 2003 TrailBlazer per year?
Based on EPA assumptions (15,000 miles/year), estimated annual fuel cost is $3,850 for the most efficient trim.
What is the city and highway MPG of the 2003 TrailBlazer?
The most efficient trim is rated 14 MPG city and 20 MPG highway.