GMC Sierra 2500 2WD
13.5 MPG The 2000 GMC Sierra 2500 2WD is EPA-rated at 13.5 MPG combined (12.5 city / 16.5 highway). Over 15,000 miles a year that is about 1111 gallons, $3556 a year in fuel, or $0.237 per mile at $3.20/gal.
Across its full 1993–2000 run it averages 14.7 MPG, falling by 1.8 MPG over 8 model years.
Running cost at different fuel prices and mileages
The figure everyone actually wants, and the one the EPA does not publish — because it depends on a fuel price no agency will commit to.
| Fuel price | Per mile | 10,000 mi/yr | 15,000 mi/yr | 20,000 mi/yr |
|---|---|---|---|---|
| $2.50/gal | $0.185 | $1852 | $2778 | $3704 |
| $3.00/gal | $0.222 | $2222 | $3333 | $4444 |
| $3.20/gal | $0.237 | $2370 | $3556 | $4741 |
| $3.50/gal | $0.259 | $2593 | $3889 | $5185 |
| $4.00/gal | $0.296 | $2963 | $4444 | $5926 |
| $4.50/gal | $0.333 | $3333 | $5000 | $6667 |
| $5.00/gal | $0.370 | $3704 | $5556 | $7407 |
Every model year
| Year | Combined | City | Highway | EPA fuel cost/yr | CO₂ g/mi | Trims |
|---|---|---|---|---|---|---|
| 2000 | 13.5 MPG | 12.5 | 16.5 | $4675 | 667 | 2 |
| 1999 | 13.5 MPG | 12.5 | 16.5 | $4675 | 667 | 2 |
| 1998 | 14.6 MPG | 13 | 17.4 | $4480 | 627 | 5 |
| 1997 | 15 MPG | 13.8 | 17.6 | $4360 | 610 | 5 |
| 1996 | 14.6 MPG | 13.2 | 17.2 | $4490 | 628 | 5 |
| 1995 | 15.3 MPG | 13.6 | 18.3 | $4400 | 612 | 11 |
| 1994 | 15.5 MPG | 13.7 | 18.5 | $4341 | 604 | 11 |
| 1993 | 15.3 MPG | 13.7 | 18.3 | $4295 | 601 | 10 |
Where a model year offered several engines or drivetrains, the figure is the average across all EPA-tested trims that year — the trim count is shown so you can see how much averaging is involved.
How it compares in its class
Among the 29 standard pickup trucks models tracked here, the GMC Sierra 2500 2WD ranks 25 on current figures, against a class average of 15.6 MPG.
Closest more-efficient alternatives in the same class: Dodge D100/D150 Pickup 2WD (13.7), Chevrolet K1500 Pickup 4WD (14), Ford F250 Pickup 2WD (14), Chevrolet C1500 Pickup 2WD (14.5), Chevrolet Pickup 2500 2WD (14.6).
Tailpipe CO₂ is rated at 667 grams per mile, which works out to roughly 10.0 tonnes a year at 15,000 miles.
Questions
What MPG does the GMC Sierra 2500 2WD get?
The 2000 GMC Sierra 2500 2WD is rated at 13.5 MPG combined by the EPA — 12.5 city and 16.5 highway. Across all 8 model years in the database it averages 14.7 MPG, ranging from 12 to 19 depending on year and trim.
How much does a GMC Sierra 2500 2WD cost in fuel per year?
At 13.5 MPG and 15,000 miles a year, it burns about 1111 gallons — roughly $3556 a year with fuel at $3.20 a gallon, or $0.237 per mile. The EPA's own published annual figure for the 2000 model is $4675.
Has the GMC Sierra 2500 2WD become more efficient over time?
No — it has actually gone backwards, from 15.3 MPG in 1993 to 13.5 in 2000. That usually reflects the model growing heavier, more powerful, or moving upmarket rather than the engineering getting worse.
Is the GMC Sierra 2500 2WD efficient for its class?
It ranks 25 of 29 in the Standard Pickup Trucks class on current figures, against a class average of 15.6 MPG. That is 2.1 worse than typical for the class.
EPA test figures from fueleconomy.gov. Cost per mile and annual fuel spend are computed at a reference price of $3.20 per gallon — use your own price. Estimates based on official test figures and average fuel prices. Real-world consumption varies with driving style, load, terrain and maintenance.