1999 GMC Sierra 1500 4WDFuel Economy & MPG Ratings
Gasoline Standard Pickup Trucks 4WD4-Wheel or All-Wheel Drive
City
14
MPG
Highway
19
MPG
Combined
16
MPG
Real-World MPG
Based on 1 owner report via EPA fueleconomy.gov
19.0MPG average+18.8% vs EPA label
EPA combined: 16 MPG · Owner reported avg: 19.0 MPG
Driving mix: City 10% / Highway 90%
Source: EPA fueleconomy.gov “Your MPG” owner submissions. Real-world results vary by driver behavior, conditions, and equipment.
Owner reported MPG for this vehicle averages 19.0 real world MPG based on 1 owner report. EPA combined rating is 16 MPG.
Trim Comparison
Automatic 4-spd
Regular
City
14
Hwy
19
Comb
16
Fuel cost: $4,200/yr
Automatic 4-spd
Regular
City
14
Hwy
17
Comb
15
Fuel cost: $4,500/yr
Manual 5-spd
Regular
City
13
Hwy
18
Comb
15
Fuel cost: $4,500/yr
Manual 5-spd
Regular
City
13
Hwy
16
Comb
14
Fuel cost: $4,800/yr
Automatic 4-spd
Regular
City
13
Hwy
17
Comb
14
Fuel cost: $4,800/yr
Automatic 4-spd
Regular
City
13
Hwy
16
Comb
14
Fuel cost: $4,800/yr
Automatic 4-spd
Regular
City
12
Hwy
16
Comb
14
Fuel cost: $4,800/yr
| Trim | Engine | City | Hwy | Combined | Fuel Cost/yr |
|---|---|---|---|---|---|
| Automatic 4-spd | Regular | 14 | 19 | 16 | $4,200 |
| Automatic 4-spd | Regular | 14 | 17 | 15 | $4,500 |
| Manual 5-spd | Regular | 13 | 18 | 15 | $4,500 |
| Manual 5-spd | Regular | 13 | 16 | 14 | $4,800 |
| Automatic 4-spd | Regular | 13 | 17 | 14 | $4,800 |
| Automatic 4-spd | Regular | 13 | 16 | 14 | $4,800 |
| Automatic 4-spd | Regular | 12 | 16 | 14 | $4,800 |
Annual Fuel Cost
$4,200
Based on gasoline at $3.67/gal, 15,000 miles/year
5-Year Fuel Savings
$-9,000
vs. average new vehicle
EPA Fuel Economy Score: -1/10
GHG Score: -1/10
Environment
- CO₂ Tailpipe Emissions
- 555 g/mile
- Annual Petroleum Consumption
- 18.6 barrels
Specifications
- Engine
- 5.7L 6-cyl
- Transmission
- 4-speed Automatic
- Drivetrain
- AWD
- Body Style
- Pickup Truck
- GVWR
- Class 2-3 (6,001–10,000 lbs)
Source: EPA fuel economy data & NHTSA vPIC. Specifications reflect the most common trim configuration.
Engine & Efficiency Details
Source: EPA fueleconomy.gov
- Engine Size
- 4.3L, 6-cylinder
- Fuel Type
- Regular Gasoline
Annual Fuel Cost by State
Prices as of week ending May 18, 2026 · Source: EIA
National AvgEPA default
$4.490/gal$4,209/yr
California
$5.957/gal$5,585/yr
Texas
$3.888/gal$3,645/yr
Florida
$4.136/gal$3,878/yr
New York
$4.522/gal$4,239/yr
Ohio
$4.510/gal$4,228/yr
Washington
$5.591/gal$5,242/yr
Colorado
$4.618/gal$4,329/yr
Minnesota
$4.344/gal$4,073/yr
Massachusetts
$4.448/gal$4,170/yr
| State | Gas Price | Annual Cost | vs. National Avg |
|---|---|---|---|
| National AvgEPA default | $4.490/gal | $4,209/yr | — |
| California | $5.957/gal | $5,585/yrHIGHEST | +$1,376 |
| Texas | $3.888/gal | $3,645/yrLOWEST | $-564 |
| Florida | $4.136/gal | $3,878/yr | $-331 |
| New York | $4.522/gal | $4,239/yr | +$30 |
| Ohio | $4.510/gal | $4,228/yr | +$19 |
| Washington | $5.591/gal | $5,242/yr | +$1,033 |
| Colorado | $4.618/gal | $4,329/yr | +$120 |
| Minnesota | $4.344/gal | $4,073/yr | $-136 |
| Massachusetts | $4.448/gal | $4,170/yr | $-39 |
Calculated at 15,000 miles/year (EPA standard assumption) using 16 MPG combined. Regular gasoline prices. Actual costs vary.
Related
GMC Sierra 1500 4WD MPG History
See how this model's fuel economy changed by year