2025 head-to-head · Subcompact Car
2025 Aston Martin DB12 V8 vs Mercedes-Benz SL-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.
RWD · 4.0L 8-cyl turbo · 8-speed automatic · 17 MPG
AWD · 4.0L 8-cyl turbo · 9-speed automatic · 29 MPGe + 18 MPG
The 2025 Mercedes-Benz SL-Class Plug-in Hybrid is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas and 18¢/kWh electricity, it costs about $2,770 a year to fuel (29 MPGe + 18 MPG), versus $3,485 for the 2025 Aston Martin DB12 V8 (17 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
- Aston Martin DB12 V8
- Mercedes-Benz SL-Class Plug-in Hybrid
Side by side
| Aston Martin DB12 V8 | Mercedes-Benz SL-Class Plug-in Hybrid | |
|---|---|---|
| $3,485 | Your annual fuel cost | $2,770 |
| 17 MPG | Combined efficiency | 29 MPGe + 18 MPG |
| 15 MPG | City | 33 MPGe / 16 MPG |
| 22 MPG | Highway | 25 MPGe / 22 MPG |
| — | Electricity use (kWh/100 mi) | 43 kWh |
| — | Driving range | 350 mi |
| — | All-electric range | 11 mi |
| 72 cu ft | Passenger volume | 76 cu ft |
| 9 cu ft | Cargo volume | 2 cu ft |
| 507 g/mi | Tailpipe CO₂ (g/mi) | 379 g/mi |
| 3/10 | EPA fuel economy score | 4/10 |
| 3/10 | EPA greenhouse gas score | 5/10 |
| — | Charge time at 240V | 1.1 hrs |
| Gas | Powertrain | Plug-in hybrid |
| Premium gasoline | Fuel | Premium gas + electricity |
| 4.0L 8-cyl turbo | Engine / motor | 4.0L 8-cyl turbo |
| 8-speed automatic | Transmission | 9-speed automatic |
| RWD | 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.
Aston Martin DB12 V8 vs Mercedes-Benz SL-Class Plug-in Hybrid across model years
- Aston Martin DB12 V8
- Mercedes-Benz SL-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 SL-Class Plug-in Hybrid has more passenger space (76 vs. 72 cu ft); the Aston Martin DB12 V8 has more cargo space (9 vs. 2 cu ft).
Among 30 2025 subcompact cars, the Aston Martin DB12 V8 ranks 29th and the Mercedes-Benz SL-Class Plug-in Hybrid 22nd for lowest fuel cost.
The powertrains differ: the Aston Martin DB12 V8 is a conventional gas model, while the Mercedes-Benz SL-Class Plug-in Hybrid is a plug-in hybrid.
Frequently asked questions
Which is more fuel-efficient, the 2025 Aston Martin DB12 V8 or the 2025 Mercedes-Benz SL-Class Plug-in Hybrid?
Measured by cost to drive, the Mercedes-Benz SL-Class Plug-in Hybrid. The Aston Martin DB12 V8 is rated 17 MPG combined and the Mercedes-Benz SL-Class Plug-in Hybrid 29 MPGe + 18 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2025 Aston Martin DB12 V8 vs. the Mercedes-Benz SL-Class Plug-in Hybrid per year?
At 15,000 miles a year with $3.95/gal premium gas and 18¢/kWh electricity, about $3,485 for the Aston Martin DB12 V8 and $2,770 for the Mercedes-Benz SL-Class Plug-in Hybrid.
Which has more cargo space?
The Aston Martin DB12 V8, with 9 cu ft of luggage volume versus 2 cu ft (EPA interior volume index).
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