2016 head-to-head · Large Car
2016 Audi A8 Diesel vs Mercedes-Benz S-Class Plug-in Hybrid
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
RWD · 3.0L 6-cyl turbo · 7-speed automatic · 58 MPGe + 26 MPG
On fuel costs these two are nearly tied. Driving 15,000 miles a year with $3.70/gal diesel fuel, 18¢/kWh electricity and $3.95/gal premium gas, the most efficient 2016 Audi A8 Diesel (28 MPG) costs about $1,982 a year to fuel and the 2016 Mercedes-Benz S-Class Plug-in Hybrid (58 MPGe + 26 MPG) about $2,037.
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 Diesel
- Mercedes-Benz S-Class Plug-in Hybrid
Side by side
| Audi A8 Diesel | Mercedes-Benz S-Class Plug-in Hybrid | |
|---|---|---|
| $1,982 | Your annual fuel cost | $2,037 |
| 28 MPG | Combined efficiency | 58 MPGe + 26 MPG |
| 24 MPG | City | 54 MPGe / 24 MPG |
| 36 MPG | Highway | 63 MPGe / 30 MPG |
| — | Electricity use (kWh/100 mi) | 59 kWh |
| — | Driving range | 450 mi |
| — | All-electric range | 14 mi |
| 107 cu ft | Passenger volume | 112 cu ft |
| 15 cu ft | Cargo volume | 9 cu ft |
| 360 g/mi | Tailpipe CO₂ (g/mi) | 227 g/mi |
| 7/10 | EPA fuel economy score | 7/10 |
| 6/10 | EPA greenhouse gas score | 9/10 |
| — | Charge time at 240V | 2.8 hrs |
| Diesel | Powertrain | Plug-in hybrid |
| Diesel | Fuel | Premium gas + electricity |
| 3.0L 6-cyl turbo | Engine / motor | 3.0L 6-cyl turbo |
| 8-speed automatic | Transmission | 7-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 A8 Diesel vs Mercedes-Benz S-Class Plug-in Hybrid across model years
- Audi A8 Diesel
- Mercedes-Benz S-Class Plug-in Hybrid
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 Mercedes-Benz S-Class Plug-in Hybrid has more passenger space (112 vs. 107 cu ft); the Audi A8 Diesel has more cargo space (15 vs. 9 cu ft).
Among 30 2016 large cars, the Audi A8 Diesel ranks 8th and the Mercedes-Benz S-Class Plug-in Hybrid 13th for lowest fuel cost.
The powertrains differ: the Audi A8 Diesel is a diesel, while the Mercedes-Benz S-Class Plug-in Hybrid is a plug-in hybrid.
Frequently asked questions
Which is more fuel-efficient, the 2016 Audi A8 Diesel or the 2016 Mercedes-Benz S-Class Plug-in Hybrid?
Measured by cost to drive, the Audi A8 Diesel. The Audi A8 Diesel is rated 28 MPG combined and the Mercedes-Benz S-Class Plug-in Hybrid 58 MPGe + 26 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2016 Audi A8 Diesel vs. the Mercedes-Benz S-Class Plug-in Hybrid per year?
At 15,000 miles a year with $3.70/gal diesel fuel, 18¢/kWh electricity and $3.95/gal premium gas, about $1,982 for the Audi A8 Diesel and $2,037 for the Mercedes-Benz S-Class Plug-in Hybrid.
Which has more cargo space?
The Audi A8 Diesel, with 15 cu ft of luggage volume versus 9 cu ft (EPA interior volume index).
Audi A8 Diesel vs Mercedes-Benz S-Class Plug-in Hybrid in other years
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