- Newest year: 2018
- Gas
- Midsize cars
2013-2018 Audi S8 MPG & Fuel Cost
6 model years · 18–20 MPG combined
15,000 mi/yr · premium gasoline $5.36/gal (U.S. average, Sep 2026)
Among the costliest midsize car configurations to fuel, MY2018. Ranked against all rated configurations, not sales-weighted.
2013-2018 Audi S8 at a glance
The 2013-2018 Audi S8 covers 6 model years in the EPA database (6 configurations in all), rated 18–20 MPG combined. The newest model year, 2018, costs about $4,570 a year to fuel for its most efficient version, the S8 4.0L 8-cyl turbo AWD (18 MPG), at premium gasoline $5.36/gal (U.S. average, Sep 2026). EPA changed the ratings in 2015, 2016, 2017 and 2018; 2014 repeat the values of the year before. The best combined rating in the generation, 20 MPG, was reached in 2015.
2013-2018 Audi S8 by model year
| Model year | Powertrains | Combined | $/yr | EPA ratings |
|---|---|---|---|---|
| 2018 | Gas | 18 MPG | $4,570 | Ratings changed |
| 2017 | Gas | 18 MPG | $4,560 | Ratings changed |
| 2016 | Gas | 18 MPG | $4,460 | Ratings changed |
| 2015 | Gas | 20 MPG | $4,080 | Ratings changed |
| 2014 | Gas | 18 MPG | $4,460 | Same EPA ratings as 2013 |
| 2013 | Gas | 18 MPG | $4,460 | First year |
What the 2018 S8 4.0L 8-cyl turbo AWD costs to drive
Per month
$381
$4,570 a year ÷ 12
Per 25 miles
$7.62
Per 100 miles
$30.47
Five years
$22,850
5 × the yearly cost, prices held at today's level
vs the midsize car median
$1,640more a year
Class median $2,930 a year, MY2018
Based on 15,000 miles a year and premium gasoline $5.36/gal (U.S. average, Sep 2026).
2018 Audi S8 MPG
Versus 2017: The most efficient configuration stays at 18 MPG. Its annual cost goes from $4,560 to $4,570, $10 more.
Gas configurations (1)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| S8 (Most efficient) | 4.0L 8-cyl turbo | AWD | 14 | 24 | 18 | $4,570 |
1 configuration requires or recommends higher-octane gasoline and is costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
2017 Audi S8 MPG
18 MPG · $4,560/yr
Versus 2016: The most efficient configuration stays at 18 MPG. Its annual cost goes from $4,460 to $4,560, $100 more.
Gas configurations (1)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| S8 (Most efficient) | 4.0L 8-cyl turbo | AWD | 15 | 24 | 18 | $4,560 |
1 configuration requires or recommends higher-octane gasoline and is costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
2016 Audi S8 MPG
18 MPG · $4,460/yr
Versus 2015: The most efficient configuration moves from 20 to 18 MPG, down 2. Its annual cost goes from $4,080 to $4,460, $380 more.
Gas configurations (1)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| S8 (Most efficient) | 4.0L 8-cyl turbo | AWD | 15 | 25 | 18 | $4,460 |
1 configuration requires or recommends higher-octane gasoline and is costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
2015 Audi S8 MPG
20 MPG · $4,080/yr
Versus 2014: The most efficient configuration moves from 18 to 20 MPG, up 2. Its annual cost goes from $4,460 to $4,080, $380 less.
Gas configurations (1)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| S8 (Most efficient) | 4.0L 8-cyl turbo | AWD | 16 | 27 | 20 | $4,080 |
1 configuration requires or recommends higher-octane gasoline and is costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
2014 Audi S8 MPG
Same EPA ratings as 2013
EPA lists the same ratings for the 2014 Audi S8 as for the 2013 model, so the configurations and costs are the ones in the 2013 section above.See 2013
2013 Audi S8 MPG
18 MPG · $4,460/yr
Gas configurations (1)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| S8 (Most efficient) | 4.0L 8-cyl turbo | AWD | 15 | 26 | 18 | $4,460 |
1 configuration requires or recommends higher-octane gasoline and is costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
Fuel cost by state
Yearly cost of the S8 4.0L 8-cyl turbo AWD: $5,450 in California and $3,960 in Texas, a $1,490 difference.
- California $5,450
- Washington $5,130
- New York $4,510
- Florida $4,170
- Texas $3,960
Similar cars
Closest combined MPG among MY2018 midsize car models.
Generations
- 2001
- 2002-2003
- 2007-2009
- 2013-2018
- 2020-2027*
Frequently asked questions
What gas mileage does the 2013-2018 Audi S8 get?
EPA rates the 2013-2018 Audi S8 at 18–20 MPG combined across 6 configurations and 6 model years. The most efficient version, the 2015 S8 4.0L 8-cyl turbo AWD, is rated 20 MPG (16 city, 27 highway).
Which years had the best MPG in the 2013-2018 Audi S8?
The S8 4.0L 8-cyl turbo AWD reached the generation's best combined rating, 20 MPG, in 2015. The lowest top rating, 18 MPG, was in 2013, 2014, 2016, 2017 and 2018.
Did EPA ratings change during the 2013-2018 Audi S8?
Yes. Ratings changed in 2015, 2016, 2017 and 2018. In 2014 the values repeat the year before.
How does the 2013-2018 Audi S8 compare with the previous generation?
The previous generation (2007-2009 Audi S8) is rated 15 MPG combined and costs $5,360 a year to fuel; the 2013-2018 model is rated 18–20 MPG and costs $4,080–$4,570 a year.
How much does it cost to fuel a 2018 Audi S8 per year?
Driving 15,000 miles a year at premium gasoline $5.36/gal (U.S. average, Sep 2026), the S8 4.0L 8-cyl turbo AWD costs about $4,570 a year. Across all 1 configuration the cost runs $4,570 a year.
How much does it cost to drive a 2018 Audi S8 100 miles?
About $30.47 per 100 miles for the S8 4.0L 8-cyl turbo AWD at premium gasoline $5.36/gal (U.S. average, Sep 2026). That is the annual cost over 15,000 miles divided by 150.
Is the 2018 Audi S8 more efficient in the city or on the highway?
The S8 4.0L 8-cyl turbo AWD is rated 14 city and 24 highway MPG, so it is more efficient on the highway, by 10 MPG.
How does the 2018 Audi S8 compare with other midsize car configurations?
The S8 4.0L 8-cyl turbo AWD costs about $4,570 a year to fuel, $1,640 more than the class median of $2,930, and less than 0 of 10 midsize car configurations. The comparison covers all 205 rated midsize car configurations for MY2018, not weighted by sales.
Is the 2018 Audi S8 different from the 2017 model?
The most efficient configuration stays at 18 MPG. Its annual cost goes from $4,560 to $4,570, $10 more. EPA lists 1 configuration for 2018 against 1 configuration for 2017. See the 2017 Audi S8 for that year.