NRCan fuel consumption ratings
Where the 2003 GMC G 15 ranks
A number like “8.5 L/100 km” means nothing on its own. This puts it against every other vehicle rated in Canada that year.
Your vehicle
Against every 2003 vehicle rated in Canada
15%more efficient than
Among the thirstiest. The 2003 GMC G 15 uses 16.6 L/100 km combined, ranking 686 of 820.
Within Van: Cargo
70%
More efficient than 70% of the 30 vehicles NRCan puts in this class for 2003.
- Best in class
- 12.9
- Class median
- 17.3
- This vehicle
- 16.6
- Worst in class
- 19.7
Tailpipe emissions
382 g/km
Cleaner than 12% of 2003 vehicles.
Tailpipe only. It does not count the emissions of producing the fuel, or of generating electricity for an electric vehicle — the EV comparison does account for the grid.
How this is measured: Ranked against vehicles of the same model year, not against everything ever rated — comparing a 2004 SUV with 2026 hybrids would rank the calendar rather than the car. Where a model has several rated versions, the median one is used.
Source: NRCan — Fuel consumption ratings. Data current as of 2026-08-11. 30,784 rated vehicles, 1995 to 2026.