2015 head-to-head · Large Car
2015 Audi A8 vs Audi A8 Diesel
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 · 3.0L 6-cyl turbo · 8-speed automatic · 28 MPG
The 2015 Audi A8 Diesel is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas and $3.70/gal diesel fuel, it costs about $1,982 a year to fuel (28 MPG), versus $2,693 for the 2015 Audi A8 (22 MPG). That's roughly $711 a year, or about $3,555 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 A8
- Audi A8 Diesel
Side by side
| Audi A8 | Audi A8 Diesel | |
|---|---|---|
| $2,693 | Your annual fuel cost | $1,982 |
| 22 MPG | Combined efficiency | 28 MPG |
| 18 MPG | City | 24 MPG |
| 30 MPG | Highway | 36 MPG |
| 100 cu ft | Passenger volume | 107 cu ft |
| 15 cu ft | Cargo volume | 15 cu ft |
| 401 g/mi | Tailpipe CO₂ (g/mi) | 360 g/mi |
| 5/10 | EPA fuel economy score | 7/10 |
| 5/10 | EPA greenhouse gas score | 6/10 |
| Gas | Powertrain | Diesel |
| Premium gasoline | Fuel | Diesel |
| 4.0L 8-cyl turbo | Engine / motor | 3.0L 6-cyl turbo |
| 8-speed automatic | Transmission | 8-speed automatic |
| AWD | Drivetrain | AWD |
✓ 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 A8 vs Audi A8 Diesel across model years
- Audi A8
- Audi A8 Diesel
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 A8 Diesel has more passenger space (107 vs. 100 cu ft).
Among 29 2015 large cars, the Audi A8 ranks 21st and the Audi A8 Diesel 6th for lowest fuel cost.
The powertrains differ: the Audi A8 is a conventional gas model, while the Audi A8 Diesel is a diesel.
Frequently asked questions
Which is more fuel-efficient, the 2015 Audi A8 or the 2015 Audi A8 Diesel?
Measured by cost to drive, the Audi A8 Diesel. The Audi A8 is rated 22 MPG combined and the Audi A8 Diesel 28 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2015 Audi A8 vs. the Audi A8 Diesel per year?
At 15,000 miles a year with $3.95/gal premium gas and $3.70/gal diesel fuel, about $2,693 for the Audi A8 and $1,982 for the Audi A8 Diesel.
Audi A8 vs Audi A8 Diesel in other years
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