2015 head-to-head · Midsize Car
2015 Audi S8 vs Lexus GS
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
AWD · 4.0L 8-cyl turbo · 8-speed automatic · 20 MPG
The 2015 Lexus GS is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $2,576 a year to fuel (23 MPG), versus $2,962 for the 2015 Audi S8 (20 MPG). That's roughly $386 a year, or about $1,932 over five years.
Your numbers
Change these to match your driving and local prices. Every figure and chart on this page updates.
Fuel cost over 10 years
- Audi S8
- Lexus GS
Side by side
| Audi S8 | Lexus GS | |
|---|---|---|
| $2,962 | Your annual fuel cost | $2,576 |
| 20 MPG | Combined efficiency | 23 MPG |
| 16 MPG | City | 19 MPG |
| 27 MPG | Highway | 29 MPG |
| 100 cu ft | Passenger volume | 99 cu ft |
| 15 cu ft | Cargo volume | 14 cu ft |
| 452 g/mi | Tailpipe CO₂ (g/mi) | 392 g/mi |
| 5/10 | EPA fuel economy score | 5/10 |
| 5/10 | EPA greenhouse gas score | 5/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 4.0L 8-cyl turbo | Engine / motor | 3.5L 6-cyl |
| 8-speed automatic | Transmission | 8-speed automatic |
| AWD | Drivetrain | RWD |
✓ marks the better value. EPA scores run 1–10 (10 is best). Volumes come from the EPA interior volume index and aren't published for every body style.
Audi S8 vs Lexus GS across model years
- Audi S8
- Lexus GS
Annual fuel cost of the most efficient configuration of each model year, at your prices. Click a point to open that year.
How they differ
Per EPA interior volume figures, the Audi S8 has more cargo space (15 vs. 14 cu ft).
Among 69 2015 midsize cars, the Audi S8 ranks 60th and the Lexus GS 51st for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2015 Audi S8 or the 2015 Lexus GS?
Measured by cost to drive, the Lexus GS. The Audi S8 is rated 20 MPG combined and the Lexus GS 23 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2015 Audi S8 vs. the Lexus GS per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,962 for the Audi S8 and $2,576 for the Lexus GS.
Which has more cargo space?
The Audi S8, with 15 cu ft of luggage volume versus 14 cu ft (EPA interior volume index).
Audi S8 vs Lexus GS in other years
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