2026 head-to-head · Subcompact Car
2026 Aston Martin DB12 S vs Porsche 911
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
The 2026 Porsche 911 is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $2,821 a year to fuel (21 MPG), versus $3,485 for the 2026 Aston Martin DB12 S (17 MPG). That's roughly $664 a year, or about $3,319 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 S
- Porsche 911
Side by side
| Aston Martin DB12 S | Porsche 911 | |
|---|---|---|
| $3,485 | Your annual fuel cost | $2,821 |
| 17 MPG | Combined efficiency | 21 MPG |
| 14 MPG | City | 18 MPG |
| 21 MPG | Highway | 25 MPG |
| 72 cu ft | Passenger volume | 70 cu ft |
| 9 cu ft | Cargo volume | 5 cu ft |
| 522 g/mi | Tailpipe CO₂ (g/mi) | 424 g/mi |
| 3/10 | EPA fuel economy score | 4/10 |
| 3/10 | EPA greenhouse gas score | 4/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 4.0L 8-cyl turbo | Engine / motor | 3.0L 6-cyl turbo |
| 8-speed automatic | Transmission | 8-speed dual-clutch |
| RWD | 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.
Aston Martin DB12 S vs Porsche 911 across model years
- Aston Martin DB12 S
- Porsche 911
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 Aston Martin DB12 S has more cargo space (9 vs. 5 cu ft).
Among 26 2026 subcompact cars, the Aston Martin DB12 S ranks 25th and the Porsche 911 18th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2026 Aston Martin DB12 S or the 2026 Porsche 911?
Measured by cost to drive, the Porsche 911. The Aston Martin DB12 S is rated 17 MPG combined and the Porsche 911 21 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2026 Aston Martin DB12 S vs. the Porsche 911 per year?
At 15,000 miles a year with $3.95/gal premium gas, about $3,485 for the Aston Martin DB12 S and $2,821 for the Porsche 911.
Which has more cargo space?
The Aston Martin DB12 S, with 9 cu ft of luggage volume versus 5 cu ft (EPA interior volume index).
More 2026 comparisons
Aston Martin DB12 S vs…
Or compare the 2026 Aston Martin DB12 S with anything else: