1985 Oldsmobile Cutlass SupremeFuel Economy & MPG Ratings
Diesel Midsize CarsRear-Wheel Drive
City
20
MPG
Highway
28
MPG
Combined
23
MPG
Trim Comparison
Automatic 3-spd
Diesel Diesel
City
20
Hwy
28
Comb
23
Fuel cost: $3,700/yr
Automatic 3-spd
Diesel Diesel
City
18
Hwy
26
Comb
21
Fuel cost: $4,050/yr
Automatic 3-spd
Regular
City
17
Hwy
22
Comb
19
Fuel cost: $3,550/yr
Automatic 4-spd
Regular
City
15
Hwy
22
Comb
18
Fuel cost: $3,750/yr
Automatic 3-spd
Regular
City
16
Hwy
22
Comb
18
Fuel cost: $3,750/yr
Automatic 4-spd
Regular
City
15
Hwy
22
Comb
18
Fuel cost: $3,750/yr
Automatic 3-spd
Regular
City
15
Hwy
20
Comb
17
Fuel cost: $3,950/yr
| Trim | Engine | City | Hwy | Combined | Fuel Cost/yr |
|---|---|---|---|---|---|
| Automatic 3-spd | Diesel Diesel | 20 | 28 | 23 | $3,700 |
| Automatic 3-spd | Diesel Diesel | 18 | 26 | 21 | $4,050 |
| Automatic 3-spd | Regular | 17 | 22 | 19 | $3,550 |
| Automatic 4-spd | Regular | 15 | 22 | 18 | $3,750 |
| Automatic 3-spd | Regular | 16 | 22 | 18 | $3,750 |
| Automatic 4-spd | Regular | 15 | 22 | 18 | $3,750 |
| Automatic 3-spd | Regular | 15 | 20 | 17 | $3,950 |
Annual Fuel Cost
$3,700
Based on gasoline at $3.67/gal, 15,000 miles/year
5-Year Fuel Savings
$-6,500
vs. average new vehicle
EPA Fuel Economy Score: -1/10
GHG Score: -1/10
Environment
- CO₂ Tailpipe Emissions
- 443 g/mile
- Annual Petroleum Consumption
- 15.5 barrels
Specifications
- Engine
- 5.7L 6-cyl
- Transmission
- 3-speed Automatic
- Drivetrain
- RWD
- Body Style
- Sedan
- GVWR
- Class 1 (≤6,000 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
- Diesel
Annual Fuel Cost by State
Prices as of week ending May 18, 2026 · Source: EIA
National AvgEPA default
$4.490/gal$2,928/yr
California
$5.957/gal$3,885/yr
Texas
$3.888/gal$2,536/yr
Florida
$4.136/gal$2,697/yr
New York
$4.522/gal$2,949/yr
Ohio
$4.510/gal$2,941/yr
Washington
$5.591/gal$3,646/yr
Colorado
$4.618/gal$3,012/yr
Minnesota
$4.344/gal$2,833/yr
Massachusetts
$4.448/gal$2,901/yr
| State | Gas Price | Annual Cost | vs. National Avg |
|---|---|---|---|
| National AvgEPA default | $4.490/gal | $2,928/yr | — |
| California | $5.957/gal | $3,885/yrHIGHEST | +$957 |
| Texas | $3.888/gal | $2,536/yrLOWEST | $-392 |
| Florida | $4.136/gal | $2,697/yr | $-231 |
| New York | $4.522/gal | $2,949/yr | +$21 |
| Ohio | $4.510/gal | $2,941/yr | +$13 |
| Washington | $5.591/gal | $3,646/yr | +$718 |
| Colorado | $4.618/gal | $3,012/yr | +$84 |
| Minnesota | $4.344/gal | $2,833/yr | $-95 |
| Massachusetts | $4.448/gal | $2,901/yr | $-27 |
Calculated at 15,000 miles/year (EPA standard assumption) using 23 MPG combined. Regular gasoline prices. Actual costs vary.
Related
Oldsmobile Cutlass Supreme MPG History
See how this model's fuel economy changed by year