1985 · Large Car · Diesel
1985 Oldsmobile Delta 88 Royale Diesel MPG & fuel economy
The 1985 Oldsmobile Delta 88 Royale Diesel is a large car offered in 2 EPA-rated configurations. The most efficient version returns 21 MPG combined (18 city / 26 highway) on diesel. Among 23 large cars rated for 1985, it ranks 15th for lowest fuel cost. At 15,000 miles a year with $3.70/gal diesel fuel, it costs about $2,643 a year to fuel.
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Fuel average
The 1985 Oldsmobile Delta 88 Royale Diesel's fuel average is 8.9 km/L (11.2 L/100 km), or 21 MPG combined: 7.7 km/L in the city and 11.1 km/L on the highway.
| MPG | km/L | L/100 km | |
|---|---|---|---|
| City | 18 | 7.7 | 13.1 |
| Highway | 26 | 11.1 | 9.0 |
| Combined | 21 | 8.9 | 11.2 |
How it ranks among 1985 Large Cars
Full class ranking →Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.
2 EPA-rated configurations
| Configuration | Type | City | Hwy | Combined | Range | Your cost / yr |
|---|---|---|---|---|---|---|
| RWD · 5.7L 8-cyl · 3-speed automatic Delta 88 Royale |
Diesel | 18 MPG | 26 MPG | 21 MPG | — | $2,643 |
| RWD · 5.7L 8-cyl · 4-speed automatic Delta 88 Royale |
Diesel | 18 MPG | 27 MPG | 21 MPG | — | $2,643 |
Specs (most efficient configuration)
- Fuel
- Diesel
- Engine / motor
- 5.7L 8-cyl
- Transmission
- 3-speed automatic
- Drivetrain
- RWD
- Passenger volume
- 110 cu ft
- Cargo volume
- 21 cu ft
- Tailpipe CO₂
- 485 g/mi
1985 Oldsmobile Delta 88 Royale Diesel vs. rivals
Compare the 1985 Delta 88 Royale Diesel
With any other car from any year, including other Delta 88 Royale Diesel model years. Type a year to jump, e.g. "2015 Accord".
Same year, other powertrains: 1985 Oldsmobile Delta 88 Royale (18 MPG)
Frequently asked questions
What is the gas mileage of the 1985 Oldsmobile Delta 88 Royale Diesel?
Up to 21 MPG combined (18 city / 26 highway).
What fuel does the 1985 Oldsmobile Delta 88 Royale Diesel use?
Diesel.
What is the fuel average in km/L for the 1985 Oldsmobile Delta 88 Royale Diesel?
The 1985 Oldsmobile Delta 88 Royale Diesel's fuel average is 8.9 km/L (11.2 L/100 km), or 21 MPG combined: 7.7 km/L in the city and 11.1 km/L on the highway.
How much does it cost to fuel the 1985 Oldsmobile Delta 88 Royale Diesel per year?
About $2,643 at 15,000 miles a year with $3.70/gal diesel fuel, or $17.62 per 100 miles. Use the calculator on this page to plug in your own mileage and prices.