2027 head-to-head · Compact Car
2027 Audi RS e-tron vs Mercedes-Benz C-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.
AWD · Electric motors (667 kW) · Single-speed · 84 MPGe · 278 mi
The 2027 Audi RS 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 $1,085 a year to fuel (84 MPGe), versus $2,043 for the 2027 Mercedes-Benz C-Class Hybrid (29 MPG). That's roughly $958 a year, or about $4,789 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 RS e-tron
- Mercedes-Benz C-Class Hybrid
Side by side
| Audi RS e-tron | Mercedes-Benz C-Class Hybrid | |
|---|---|---|
| $1,085 | Your annual fuel cost | $2,043 |
| 84 MPGe | Combined efficiency | 29 MPG |
| 85 MPGe | City | 25 MPG |
| 82 MPGe | Highway | 35 MPG |
| 40.2 kWh | Electricity use (kWh/100 mi) | — |
| 278 mi | Driving range | — |
| 91 cu ft | Passenger volume | 93 cu ft |
| 11 cu ft | Cargo volume | 12 cu ft |
| 0 g/mi | Tailpipe CO₂ (g/mi) | 307 g/mi |
| 9/10 | EPA fuel economy score | 6/10 |
| 10/10 | EPA greenhouse gas score | 6/10 |
| 15.5 hrs | Charge time at 240V | — |
| Electric | Powertrain | Hybrid |
| Electricity | Fuel | Premium gasoline |
| Electric motors (667 kW) | Engine / motor | 2.0L 4-cyl turbo |
| Single-speed | Transmission | 9-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 RS e-tron vs Mercedes-Benz C-Class Hybrid across model years
- Audi RS e-tron
- Mercedes-Benz C-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 C-Class Hybrid has more cargo space (12 vs. 11 cu ft).
Among 13 2027 compact cars, the Audi RS e-tron ranks 5th and the Mercedes-Benz C-Class Hybrid 12th for lowest fuel cost.
Because the Audi RS 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 C-Class Hybrid; relying on DC fast chargers can erase it.
Frequently asked questions
Which is more fuel-efficient, the 2027 Audi RS e-tron or the 2027 Mercedes-Benz C-Class Hybrid?
Measured by cost to drive, the Audi RS e-tron. The Audi RS e-tron is rated 84 MPGe combined and the Mercedes-Benz C-Class Hybrid 29 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2027 Audi RS e-tron vs. the Mercedes-Benz C-Class Hybrid per year?
At 15,000 miles a year with 18¢/kWh electricity and $3.95/gal premium gas, about $1,085 for the Audi RS e-tron and $2,043 for the Mercedes-Benz C-Class Hybrid.
Which has more cargo space?
The Mercedes-Benz C-Class Hybrid, with 12 cu ft of luggage volume versus 11 cu ft (EPA interior volume index).
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