2015 head-to-head · Midsize & Large SUV
2015 Mercedes-Benz ML-Class Diesel vs Porsche Cayenne 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.
4WD · 2.1L 4-cyl turbo · 7-speed automatic · 25 MPG
AWD · 3.0L 6-cyl supercharged · 8-speed dual-clutch · 47 MPGe + 22 MPG
The 2015 Mercedes-Benz ML-Class Diesel is the cheaper one to run. Driving 15,000 miles a year with $3.70/gal diesel fuel, 18¢/kWh electricity and $3.95/gal premium gas, it costs about $2,220 a year to fuel (25 MPG), versus $2,389 for the 2015 Porsche Cayenne Plug-in Hybrid (47 MPGe + 22 MPG). That's roughly $169 a year, or about $847 over five years.
Your numbers
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Fuel cost over 10 years
- Mercedes-Benz ML-Class Diesel
- Porsche Cayenne Plug-in Hybrid
Side by side
| Mercedes-Benz ML-Class Diesel | Porsche Cayenne Plug-in Hybrid | |
|---|---|---|
| $2,220 | Your annual fuel cost | $2,389 |
| 25 MPG | Combined efficiency | 47 MPGe + 22 MPG |
| 22 MPG | City | 48 MPGe / 21 MPG |
| 29 MPG | Highway | 46 MPGe / 24 MPG |
| — | Electricity use (kWh/100 mi) | 69 kWh |
| — | Driving range | 480 mi |
| — | All-electric range | 14 mi |
| 413 g/mi | Tailpipe CO₂ (g/mi) | 260 g/mi |
| 6/10 | EPA fuel economy score | 7/10 |
| 5/10 | EPA greenhouse gas score | 8/10 |
| — | Charge time at 240V | 3 hrs |
| Diesel | Powertrain | Plug-in hybrid |
| Diesel | Fuel | Premium gas + electricity |
| 2.1L 4-cyl turbo | Engine / motor | 3.0L 6-cyl supercharged |
| 7-speed automatic | Transmission | 8-speed dual-clutch |
| 4WD | 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.
Mercedes-Benz ML-Class Diesel vs Porsche Cayenne Plug-in Hybrid across model years
- Mercedes-Benz ML-Class Diesel
- Porsche Cayenne 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
Among 45 2015 midsize & large SUVs, the Mercedes-Benz ML-Class Diesel ranks 8th and the Porsche Cayenne Plug-in Hybrid 13th for lowest fuel cost.
The powertrains differ: the Mercedes-Benz ML-Class Diesel is a diesel, while the Porsche Cayenne Plug-in Hybrid is a plug-in hybrid.
Frequently asked questions
Which is more fuel-efficient, the 2015 Mercedes-Benz ML-Class Diesel or the 2015 Porsche Cayenne Plug-in Hybrid?
Measured by cost to drive, the Mercedes-Benz ML-Class Diesel. The Mercedes-Benz ML-Class Diesel is rated 25 MPG combined and the Porsche Cayenne Plug-in Hybrid 47 MPGe + 22 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2015 Mercedes-Benz ML-Class Diesel vs. the Porsche Cayenne Plug-in Hybrid per year?
At 15,000 miles a year with $3.70/gal diesel fuel, 18¢/kWh electricity and $3.95/gal premium gas, about $2,220 for the Mercedes-Benz ML-Class Diesel and $2,389 for the Porsche Cayenne Plug-in Hybrid.
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