2018 Audi S8
US · Midsize Cars
The 2018 Audi S8 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 Every figure below carries the source it came from, and anything our sources do not publish is left out rather than estimated.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
- 4.0L 8-cylinder turbocharged (SIDI)
- Transmission
- 8-speed automatic
- Drivetrain
- AWD
- Fuel
- Gasoline
- Economy
- 18 mpg (13.1 L/100 km) combined
Key Figures
Engine
| Specification | Value | Source |
|---|---|---|
| Engine | 4.0L 8-cylinder turbocharged (SIDI) | |
| Displacement | 4.0 L | |
| Cylinders | 8 | |
| Aspiration | Turbocharged | |
| Fuel type | Gasoline | EPA fueleconomy.gov |
Transmission and drivetrain
| Specification | Value | Source |
|---|---|---|
| Transmission | Automatic | EPA fueleconomy.gov |
| Gears | 8 | |
| Drivetrain | AWD | EPA fueleconomy.gov |
Fuel economy and range
| Specification | Value | Source |
|---|---|---|
| Combined | 18 mpg (13.1 L/100 km) | EPA fueleconomy.gov |
| City | 14 mpg (16.8 L/100 km) | |
| Highway | 24 mpg (9.8 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Our sources do not publish these for this vehicle: Power, Torque, Electric range, Battery capacity.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
1 configuration listed by our sources. Engines, drivetrains and fuel economy can differ between them.
Recalls
NHTSA lists 1 recall campaign for this model year. Last checked November 10, 2026.
20V397000: STRUCTURE:BODY:HOOD
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2013-2018 Audi S8 and A8 vehicles. The seal around the engine compartment may come loose and contact hot engine components.
Remedy: Audi will notify owners, and dealers will install a retaining plate to prevent the engine compartment seal from loosening. The recall began September 4, 2020. Owners may contact Audi customer service at 1-800-253-2834. Volkswagen's…
Reported July 7, 2020. View on NHTSA
Data sources
- EPA fueleconomy.gov · retrieved November 5, 2026 · US Government public data
- NHTSA vPIC · retrieved October 12, 2026 · US Government public data
Source checked: November 5, 2026
Data verified: November 5, 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.
Related vehicles
- 2017 Audi S8
Gasoline
4.0L 8-cylinder turbocharged (SIDI) · AWD
18 mpg (13.1 L/100 km)
Frequently asked questions
What engine does the 2018 Audi S8 have?
4.0L 8-cylinder turbocharged (SIDI). Engines can differ by trim, so check the trim list below.
What is the fuel economy of the 2018 Audi S8?
Combined fuel economy is 18 mpg (13.1 L/100 km), as published by the source shown in the specification table.
Is the 2018 Audi S8 front-wheel, rear-wheel or all-wheel drive?
Drivetrain: AWD.
Are there recalls for the 2018 Audi S8?
NHTSA lists 1 recall campaign for this model year (last checked November 10, 2026). Details are in the Recalls section.