2016 head-to-head · Midsize Car
2016 Acura RLX vs Audi S8
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
FWD · 3.5L 6-cyl · 6-speed automatic · 23 MPG
AWD · 4.0L 8-cyl turbo · 8-speed automatic · 18 MPG
The 2016 Acura RLX 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 $3,292 for the 2016 Audi S8 (18 MPG). That's roughly $716 a year, or about $3,578 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
- Acura RLX
- Audi S8
Side by side
| Acura RLX | Audi S8 | |
|---|---|---|
| $2,576 | Your annual fuel cost | $3,292 |
| 23 MPG | Combined efficiency | 18 MPG |
| 20 MPG | City | 15 MPG |
| 30 MPG | Highway | 25 MPG |
| 102 cu ft | Passenger volume | 100 cu ft |
| 15 cu ft | Cargo volume | 15 cu ft |
| 380 g/mi | Tailpipe CO₂ (g/mi) | 484 g/mi |
| 5/10 | EPA fuel economy score | 4/10 |
| 5/10 | EPA greenhouse gas score | 4/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 3.5L 6-cyl | Engine / motor | 4.0L 8-cyl turbo |
| 6-speed automatic | Transmission | 8-speed automatic |
| FWD | 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.
Acura RLX vs Audi S8 across model years
- Acura RLX
- Audi S8
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
Among 67 2016 midsize cars, the Acura RLX ranks 55th and the Audi S8 62nd for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2016 Acura RLX or the 2016 Audi S8?
Measured by cost to drive, the Acura RLX. The Acura RLX is rated 23 MPG combined and the Audi S8 18 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2016 Acura RLX vs. the Audi S8 per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,576 for the Acura RLX and $3,292 for the Audi S8.
Acura RLX vs Audi S8 in other years
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