2020 head-to-head · Two-Seater
2020 Mercedes-Benz AMG GT vs Porsche Boxster
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 2020 Porsche Boxster is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $2,469 a year to fuel (24 MPG), versus $3,292 for the 2020 Mercedes-Benz AMG GT (18 MPG). That's roughly $823 a year, or about $4,115 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
- Mercedes-Benz AMG GT
- Porsche Boxster
Side by side
| Mercedes-Benz AMG GT | Porsche Boxster | |
|---|---|---|
| $3,292 | Your annual fuel cost | $2,469 |
| 18 MPG | Combined efficiency | 24 MPG |
| 16 MPG | City | 21 MPG |
| 22 MPG | Highway | 27 MPG |
| 488 g/mi | Tailpipe CO₂ (g/mi) | 375 g/mi |
| 3/10 | EPA fuel economy score | 5/10 |
| 3/10 | EPA greenhouse gas score | 5/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 4.0L 8-cyl turbo | Engine / motor | 2.0L 4-cyl turbo |
| 7-speed dual-clutch | Transmission | 7-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.
Mercedes-Benz AMG GT vs Porsche Boxster across model years
- Mercedes-Benz AMG GT
- Porsche Boxster
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
Among 39 2020 two-seaters, the Mercedes-Benz AMG GT ranks 17th and the Porsche Boxster 9th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2020 Mercedes-Benz AMG GT or the 2020 Porsche Boxster?
Measured by cost to drive, the Porsche Boxster. The Mercedes-Benz AMG GT is rated 18 MPG combined and the Porsche Boxster 24 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2020 Mercedes-Benz AMG GT vs. the Porsche Boxster per year?
At 15,000 miles a year with $3.95/gal premium gas, about $3,292 for the Mercedes-Benz AMG GT and $2,469 for the Porsche Boxster.
Mercedes-Benz AMG GT vs Porsche Boxster in other years
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