1985 · Compact Car · Gas
1985 Buick Riviera MPG & fuel economy
The 1985 Buick Riviera is a compact car offered in 4 EPA-rated configurations. The most efficient version returns 17 MPG combined (15 city / 21 highway) on regular gasoline. That's up 1 MPG from the 1984 model. Among 52 compact cars rated for 1985, it ranks 45th for lowest fuel cost. At 15,000 miles a year with $3.10/gal regular gas, it costs about $2,735 a year to fuel.
What will it cost you?
Your mileage and prices are saved and used across the site.
Fuel average
The 1985 Buick Riviera's fuel average is 7.2 km/L (13.8 L/100 km), or 17 MPG combined: 6.4 km/L in the city and 8.9 km/L on the highway.
| MPG | km/L | L/100 km | |
|---|---|---|---|
| City | 15 | 6.4 | 15.7 |
| Highway | 21 | 8.9 | 11.2 |
| Combined | 17 | 7.2 | 13.8 |
How it ranks among 1985 Compact Cars
Full class ranking →Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.
Riviera MPG across model years
Full history →4 EPA-rated configurations
| Configuration | Type | City | Hwy | Combined | Range | Your cost / yr |
|---|---|---|---|---|---|---|
| FWD · 5.0L 8-cyl · 4-speed automatic Riviera Convertible |
Gas | 15 MPG | 21 MPG | 17 MPG | — | $2,735 |
| FWD · 5.0L 8-cyl · 4-speed automatic Riviera Convertible |
Gas | 15 MPG | 20 MPG | 17 MPG | — | $2,735 |
| FWD · 3.8L 6-cyl turbo · 4-speed automatic Riviera Convertible |
Gas | 14 MPG | 22 MPG | 17 MPG | — | $3,485 |
| FWD · 3.8L 6-cyl turbo · 4-speed automatic Riviera |
Gas | 15 MPG | 22 MPG | 17 MPG | — | $3,485 |
Specs (most efficient configuration)
- Fuel
- Regular gasoline
- Engine / motor
- 5.0L 8-cyl
- Transmission
- 4-speed automatic
- Drivetrain
- FWD
- Passenger volume
- 88 cu ft
- Cargo volume
- 13 cu ft
- Tailpipe CO₂
- 523 g/mi
1985 Buick Riviera vs. rivals
Compare the 1985 Riviera
With any other car from any year, including other Riviera model years. Type a year to jump, e.g. "2015 Accord".
Same year, other powertrains: 1985 Buick Riviera Diesel (21 MPG)
Frequently asked questions
What is the gas mileage of the 1985 Buick Riviera?
Up to 17 MPG combined (15 city / 21 highway).
What fuel does the 1985 Buick Riviera use?
Regular gasoline.
What is the fuel average in km/L for the 1985 Buick Riviera?
The 1985 Buick Riviera's fuel average is 7.2 km/L (13.8 L/100 km), or 17 MPG combined: 6.4 km/L in the city and 8.9 km/L on the highway.
How much does it cost to fuel the 1985 Buick Riviera per year?
About $2,735 at 15,000 miles a year with $3.10/gal regular gas, or $18.24 per 100 miles. Use the calculator on this page to plug in your own mileage and prices.