1999 Oldsmobile Eighty-Eight/Regency
US · Large Cars
The 1999 Oldsmobile Eighty-Eight/Regency is listed in the US market with gasoline power. Every figure below carries the source it came from, and anything our sources do not publish is left out rather than estimated.
- Engine
- Varies by configuration: 3.8L 6-cylinder supercharged, 3.8L 6-cylinder
- Transmission
- 4-speed automatic
- Drivetrain
- FWD
- Fuel
- Gasoline
- Economy
- 19 mpg (12.4 L/100 km) to 20 mpg (11.8 L/100 km) combined
Key Figures
Engine
| Specification | Value | Source |
|---|---|---|
| Engine | Varies by configuration: 3.8L 6-cylinder supercharged, 3.8L 6-cylinder | |
| Displacement | 3.8 L | |
| Cylinders | 6 | |
| Aspiration | Supercharged | |
| Fuel type | Gasoline | EPA fueleconomy.gov |
Transmission and drivetrain
| Specification | Value | Source |
|---|---|---|
| Transmission | Automatic | EPA fueleconomy.gov |
| Gears | 4 | |
| Drivetrain | FWD | EPA fueleconomy.gov |
Fuel economy and range
| Specification | Value | Source |
|---|---|---|
| Combined | 19 mpg (12.4 L/100 km) to 20 mpg (11.8 L/100 km) | EPA fueleconomy.gov |
| City | 16 mpg (14.7 L/100 km) to 17 mpg (13.8 L/100 km) | |
| Highway | 25 mpg (9.4 L/100 km) to 27 mpg (8.7 L/100 km) |
Our sources do not publish these for this vehicle: Power, Torque, Electric range, Battery capacity. We leave them out instead of estimating.
Trims and configurations
2 configurations listed by our sources. Engines, drivetrains and fuel economy can differ between them.
Recalls
No recall campaigns were found in NHTSA data at the last check. Last checked November 5, 2026.
Data sources
- EPA fueleconomy.gov · retrieved November 9, 2026 · US Government public data
Source checked: November 9, 2026
Data verified: November 9, 2026
Specifications can vary by market, trim, configuration and production date. Confirm with the manufacturer before buying parts or making safety decisions. Report an error.
Frequently asked questions
What engine does the 1999 Oldsmobile Eighty-Eight/Regency have?
Varies by configuration: 3.8L 6-cylinder supercharged, 3.8L 6-cylinder. Engines can differ by trim, so check the trim list below.
What is the fuel economy of the 1999 Oldsmobile Eighty-Eight/Regency?
Combined fuel economy is 19 mpg (12.4 L/100 km) to 20 mpg (11.8 L/100 km), as published by the source shown in the specification table.
Is the 1999 Oldsmobile Eighty-Eight/Regency front-wheel, rear-wheel or all-wheel drive?
Drivetrain: FWD.
Are there recalls for the 1999 Oldsmobile Eighty-Eight/Regency?
No recall campaigns were found in NHTSA data when we last checked on November 5, 2026. Recall status can change, so confirm with NHTSA or the manufacturer.