2027 head-to-head · Large Car
2027 Audi S6 e-tron vs Mercedes-Benz S-Class 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.
The 2027 Audi S6 e-tron is the cheaper one to run. Driving 15,000 miles a year with 18¢/kWh electricity and $3.95/gal premium gas, it costs about $883 a year to fuel (103 MPGe), versus $2,576 for the 2027 Mercedes-Benz S-Class Hybrid (23 MPG). That's roughly $1,693 a year, or about $8,466 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 S6 e-tron
- Mercedes-Benz S-Class Hybrid
Side by side
| Audi S6 e-tron | Mercedes-Benz S-Class Hybrid | |
|---|---|---|
| $883 | Your annual fuel cost | $2,576 |
| 103 MPGe | Combined efficiency | 23 MPG |
| 106 MPGe | City | 20 MPG |
| 100 MPGe | Highway | 28 MPG |
| 32.7 kWh | Electricity use (kWh/100 mi) | — |
| 326 mi | Driving range | — |
| 95 cu ft | Passenger volume | 112 cu ft |
| 26 cu ft | Cargo volume | 13 cu ft |
| 0 g/mi | Tailpipe CO₂ (g/mi) | 386 g/mi |
| 9/10 | EPA fuel economy score | 5/10 |
| 10/10 | EPA greenhouse gas score | 5/10 |
| 12 hrs | Charge time at 240V | — |
| Electric | Powertrain | Hybrid |
| Electricity | Fuel | Premium gasoline |
| Electric motors (495 kW) | Engine / motor | 3.0L 6-cyl turbo |
| Single-speed | Transmission | 9-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 S6 e-tron vs Mercedes-Benz S-Class Hybrid across model years
- Audi S6 e-tron
- Mercedes-Benz S-Class 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 Hybrid has more passenger space (112 vs. 95 cu ft); the Audi S6 e-tron has more cargo space (26 vs. 13 cu ft).
Among 16 2027 large cars, the Audi S6 e-tron ranks 3rd and the Mercedes-Benz S-Class Hybrid 10th for lowest fuel cost.
Because the Audi S6 e-tron is fully electric, it has no tailpipe emissions and its running cost depends almost entirely on your electricity rate. Cheap overnight home charging widens its advantage over the Mercedes-Benz S-Class Hybrid; relying on DC fast chargers can erase it.
Frequently asked questions
Which is more fuel-efficient, the 2027 Audi S6 e-tron or the 2027 Mercedes-Benz S-Class Hybrid?
Measured by cost to drive, the Audi S6 e-tron. The Audi S6 e-tron is rated 103 MPGe combined and the Mercedes-Benz S-Class Hybrid 23 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2027 Audi S6 e-tron vs. the Mercedes-Benz S-Class Hybrid per year?
At 15,000 miles a year with 18¢/kWh electricity and $3.95/gal premium gas, about $883 for the Audi S6 e-tron and $2,576 for the Mercedes-Benz S-Class Hybrid.
Which has more cargo space?
The Audi S6 e-tron, with 26 cu ft of luggage volume versus 13 cu ft (EPA interior volume index).
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