1984 · Midsize Car · Diesel
1984 Buick Regal Diesel MPG & fuel economy
The 1984 Buick Regal Diesel is a midsize car offered in 3 EPA-rated configurations. The most efficient version returns 23 MPG combined (20 city / 29 highway) on diesel. Across the lineup, combined ratings range from 21 to 23 MPG. Among 50 midsize cars rated for 1984, it ranks 20th for lowest fuel cost. At 15,000 miles a year with $3.70/gal diesel fuel, it costs about $2,413 a year to fuel.
What will it cost you?
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Fuel average
The 1984 Buick Regal Diesel's fuel average is 9.8 km/L (10.2 L/100 km), or 23 MPG combined: 8.5 km/L in the city and 12.3 km/L on the highway.
| MPG | km/L | L/100 km | |
|---|---|---|---|
| City | 20 | 8.5 | 11.8 |
| Highway | 29 | 12.3 | 8.1 |
| Combined | 23 | 9.8 | 10.2 |
How it ranks among 1984 Midsize Cars
Full class ranking →Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.
Regal Diesel MPG across model years
Full history →3 EPA-rated configurations
| Configuration | Type | City | Hwy | Combined | Range | Your cost / yr |
|---|---|---|---|---|---|---|
| — · 4.3L 6-cyl · 4-speed automatic Regal |
Diesel | 20 MPG | 29 MPG | 23 MPG | — | $2,413 |
| — · 4.3L 6-cyl · 4-speed automatic Regal |
Diesel | 19 MPG | 29 MPG | 22 MPG | — | $2,523 |
| — · 5.7L 8-cyl · 4-speed automatic Regal |
Diesel | 18 MPG | 27 MPG | 21 MPG | — | $2,643 |
Specs (most efficient configuration)
- Fuel
- Diesel
- Engine / motor
- 4.3L 6-cyl
- Transmission
- 4-speed automatic
- Drivetrain
- —
- Passenger volume
- 101 cu ft
- Cargo volume
- 16 cu ft
- Tailpipe CO₂
- 443 g/mi
1984 Buick Regal Diesel vs. rivals
Compare the 1984 Regal Diesel
With any other car from any year, including other Regal Diesel model years. Type a year to jump, e.g. "2015 Accord".
Same year, other powertrains: 1984 Buick Regal (19 MPG)
Frequently asked questions
What is the gas mileage of the 1984 Buick Regal Diesel?
Up to 23 MPG combined (20 city / 29 highway); ratings range from 21 to 23 MPG depending on configuration.
What fuel does the 1984 Buick Regal Diesel use?
Diesel.
What is the fuel average in km/L for the 1984 Buick Regal Diesel?
The 1984 Buick Regal Diesel's fuel average is 9.8 km/L (10.2 L/100 km), or 23 MPG combined: 8.5 km/L in the city and 12.3 km/L on the highway.
How much does it cost to fuel the 1984 Buick Regal Diesel per year?
About $2,413 at 15,000 miles a year with $3.70/gal diesel fuel, or $16.09 per 100 miles. Use the calculator on this page to plug in your own mileage and prices.