GMC Suburban 1500 2WD
14 MPG The 1999 GMC Suburban 1500 2WD is EPA-rated at 14 MPG combined (12 city / 17 highway). Over 15,000 miles a year that is about 1071 gallons, $3429 a year in fuel, or $0.229 per mile at $3.20/gal.
Across its full 1992–1999 run it averages 13.5 MPG, improving by 1 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 | $0.179 | $1786 | $2679 | $3571 |
| $3.00/gal | $0.214 | $2143 | $3214 | $4286 |
| $3.20/gal | $0.229 | $2286 | $3429 | $4571 |
| $3.50/gal | $0.250 | $2500 | $3750 | $5000 |
| $4.00/gal | $0.286 | $2857 | $4286 | $5714 |
| $4.50/gal | $0.321 | $3214 | $4821 | $6429 |
| $5.00/gal | $0.357 | $3571 | $5357 | $7143 |
Every model year
| Year | Combined | City | Highway | EPA fuel cost/yr | CO₂ g/mi | Trims |
|---|---|---|---|---|---|---|
| 1999 | 14 MPG | 12 | 17 | $4450 | 635 | 1 |
| 1998 | 14 MPG | 12 | 17 | $4450 | 635 | 1 |
| 1997 | 14 MPG | 12 | 17 | $4450 | 635 | 1 |
| 1996 | 14 MPG | 12 | 17 | $4450 | 635 | 1 |
| 1995 | 13 MPG | 12 | 16 | $4800 | 684 | 1 |
| 1994 | 13 MPG | 11 | 16 | $4800 | 684 | 1 |
| 1993 | 13 MPG | 11 | 16 | $4800 | 684 | 1 |
| 1992 | 13 MPG | 11 | 16 | $4800 | 684 | 1 |
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 43 special purpose vehicles models tracked here, the GMC Suburban 1500 2WD ranks 40 on current figures, against a class average of 17.7 MPG.
Closest more-efficient alternatives in the same class: Dodge Dakota Cab Chassis 2WD (14.5), GMC Jimmy 4WD (15), Isuzu Trooper (15), Mazda MPV 4x4 (15), Mitsubishi Montero (15).
Tailpipe CO₂ is rated at 635 grams per mile, which works out to roughly 9.5 tonnes a year at 15,000 miles.
Questions
What MPG does the GMC Suburban 1500 2WD get?
The 1999 GMC Suburban 1500 2WD is rated at 14 MPG combined by the EPA — 12 city and 17 highway. Across all 8 model years in the database it averages 13.5 MPG, ranging from 13 to 14 depending on year and trim.
How much does a GMC Suburban 1500 2WD cost in fuel per year?
At 14 MPG and 15,000 miles a year, it burns about 1071 gallons — roughly $3429 a year with fuel at $3.20 a gallon, or $0.229 per mile. The EPA's own published annual figure for the 1999 model is $4450.
Has the GMC Suburban 1500 2WD become more efficient over time?
Yes. It has gone from 13 MPG in 1992 to 14 in 1999 — an improvement of 1 MPG, or 8% across 8 model years.
Is the GMC Suburban 1500 2WD efficient for its class?
It ranks 40 of 43 in the Special Purpose Vehicles class on current figures, against a class average of 17.7 MPG. That is 3.7 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.