2025 head-to-head · Subcompact Car
2025 Maserati GranTurismo 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.
AWD · 3.0L 6-cyl turbo · 8-speed automatic · 21 MPG
AWD · 4.0L 8-cyl turbo · 9-speed automatic · 29 MPGe + 18 MPG
On fuel costs these two are nearly tied. Driving 15,000 miles a year with $3.95/gal premium gas and 18¢/kWh electricity, the most efficient 2025 Maserati GranTurismo (21 MPG) costs about $2,821 a year to fuel and the 2025 Mercedes-Benz SL-Class Plug-in Hybrid (29 MPGe + 18 MPG) about $2,770.
Your numbers
Change these to match your driving and local prices. Every figure and chart on this page updates.
Fuel cost over 10 years
- Maserati GranTurismo
- Mercedes-Benz SL-Class Plug-in Hybrid
Side by side
| Maserati GranTurismo | Mercedes-Benz SL-Class Plug-in Hybrid | |
|---|---|---|
| $2,821 | Your annual fuel cost | $2,770 |
| 21 MPG | Combined efficiency | 29 MPGe + 18 MPG |
| 18 MPG | City | 33 MPGe / 16 MPG |
| 27 MPG | Highway | 25 MPGe / 22 MPG |
| — | Electricity use (kWh/100 mi) | 43 kWh |
| — | Driving range | 350 mi |
| — | All-electric range | 11 mi |
| 89 cu ft | Passenger volume | 76 cu ft |
| 9 cu ft | Cargo volume | 2 cu ft |
| 412 g/mi | Tailpipe CO₂ (g/mi) | 379 g/mi |
| 4/10 | EPA fuel economy score | 4/10 |
| 4/10 | EPA greenhouse gas score | 5/10 |
| — | Charge time at 240V | 1.1 hrs |
| Gas | Powertrain | Plug-in hybrid |
| Premium gasoline | Fuel | Premium gas + electricity |
| 3.0L 6-cyl turbo | Engine / motor | 4.0L 8-cyl turbo |
| 8-speed automatic | 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.
Maserati GranTurismo vs Mercedes-Benz SL-Class Plug-in Hybrid across model years
- Maserati GranTurismo
- 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 Maserati GranTurismo has more passenger space (89 vs. 76 cu ft); the Maserati GranTurismo has more cargo space (9 vs. 2 cu ft).
Among 30 2025 subcompact cars, the Maserati GranTurismo ranks 24th and the Mercedes-Benz SL-Class Plug-in Hybrid 22nd for lowest fuel cost.
The powertrains differ: the Maserati GranTurismo 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 Maserati GranTurismo or the 2025 Mercedes-Benz SL-Class Plug-in Hybrid?
Measured by cost to drive, the Mercedes-Benz SL-Class Plug-in Hybrid. The Maserati GranTurismo is rated 21 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 Maserati GranTurismo 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 $2,821 for the Maserati GranTurismo and $2,770 for the Mercedes-Benz SL-Class Plug-in Hybrid.
Which has more cargo space?
The Maserati GranTurismo, with 9 cu ft of luggage volume versus 2 cu ft (EPA interior volume index).
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