1991 · Midsize Car · Gas
1991 Buick Century MPG & fuel economy
The 1991 Buick Century is a midsize car offered in 3 EPA-rated configurations. The most efficient version returns 22 MPG combined (19 city / 28 highway) on regular gasoline. Across the lineup, combined ratings range from 19 to 22 MPG. That's down 1 MPG from the 1990 model. Among 42 midsize cars rated for 1991, it ranks 5th for lowest fuel cost. At 15,000 miles a year with $3.10/gal regular gas, it costs about $2,114 a year to fuel.
What will it cost you?
Your mileage and prices are saved and used across the site.
Fuel average
The 1991 Buick Century's fuel average is 9.4 km/L (10.7 L/100 km), or 22 MPG combined: 8.1 km/L in the city and 11.9 km/L on the highway.
| MPG | km/L | L/100 km | |
|---|---|---|---|
| City | 19 | 8.1 | 12.4 |
| Highway | 28 | 11.9 | 8.4 |
| Combined | 22 | 9.4 | 10.7 |
How it ranks among 1991 Midsize Cars
Full class ranking →Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.
Century MPG across model years
Full history →3 EPA-rated configurations
| Configuration | Type | City | Hwy | Combined | Range | Your cost / yr |
|---|---|---|---|---|---|---|
| FWD · 2.5L 4-cyl · 3-speed automatic Century |
Gas | 19 MPG | 28 MPG | 22 MPG | — | $2,114 |
| FWD · 3.3L 6-cyl · 4-speed automatic Century |
Gas | 17 MPG | 27 MPG | 20 MPG | — | $2,325 |
| FWD · 3.3L 6-cyl · 3-speed automatic Century |
Gas | 17 MPG | 24 MPG | 19 MPG | — | $2,447 |
Specs (most efficient configuration)
- Fuel
- Regular gasoline
- Engine / motor
- 2.5L 4-cyl
- Transmission
- 3-speed automatic
- Drivetrain
- FWD
- Passenger volume
- 98 cu ft
- Cargo volume
- 16 cu ft
- Tailpipe CO₂
- 404 g/mi
1991 Buick Century vs. rivals
Compare the 1991 Century
With any other car from any year, including other Century model years. Type a year to jump, e.g. "2015 Accord".
Frequently asked questions
What is the gas mileage of the 1991 Buick Century?
Up to 22 MPG combined (19 city / 28 highway); ratings range from 19 to 22 MPG depending on configuration.
What fuel does the 1991 Buick Century use?
Regular gasoline.
What is the fuel average in km/L for the 1991 Buick Century?
The 1991 Buick Century's fuel average is 9.4 km/L (10.7 L/100 km), or 22 MPG combined: 8.1 km/L in the city and 11.9 km/L on the highway.
How much does it cost to fuel the 1991 Buick Century per year?
About $2,114 at 15,000 miles a year with $3.10/gal regular gas, or $14.09 per 100 miles. Use the calculator on this page to plug in your own mileage and prices.