2018 head-to-head · Midsize & Large SUV
2018 Land Rover Discovery 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 · 3.0L 6-cyl turbo · 8-speed automatic · 23 MPG
AWD · 3.0L 6-cyl supercharged · 8-speed dual-clutch · 47 MPGe + 22 MPG
On fuel costs these two are nearly tied. Driving 15,000 miles a year with $3.70/gal diesel fuel, 18¢/kWh electricity and $3.95/gal premium gas, the most efficient 2018 Land Rover Discovery Diesel (23 MPG) costs about $2,413 a year to fuel and the 2018 Porsche Cayenne Plug-in Hybrid (47 MPGe + 22 MPG) about $2,402.
Your numbers
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Fuel cost over 10 years
- Land Rover Discovery Diesel
- Porsche Cayenne Plug-in Hybrid
Side by side
| Land Rover Discovery Diesel | Porsche Cayenne Plug-in Hybrid | |
|---|---|---|
| $2,413 | Your annual fuel cost | $2,402 |
| 23 MPG | Combined efficiency | 47 MPGe + 22 MPG |
| 21 MPG | City | 47 MPGe / 21 MPG |
| 26 MPG | Highway | 46 MPGe / 24 MPG |
| — | Electricity use (kWh/100 mi) | 70 kWh |
| — | Driving range | 490 mi |
| — | All-electric range | 14 mi |
| 448 g/mi | Tailpipe CO₂ (g/mi) | 261 g/mi |
| 5/10 | EPA fuel economy score | 6/10 |
| 4/10 | EPA greenhouse gas score | 8/10 |
| — | Charge time at 240V | 3 hrs |
| Diesel | Powertrain | Plug-in hybrid |
| Diesel | Fuel | Premium gas + electricity |
| 3.0L 6-cyl turbo | Engine / motor | 3.0L 6-cyl supercharged |
| 8-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.
Land Rover Discovery Diesel vs Porsche Cayenne Plug-in Hybrid across model years
- Land Rover Discovery 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 42 2018 midsize & large SUVs, the Land Rover Discovery Diesel ranks 18th and the Porsche Cayenne Plug-in Hybrid 17th for lowest fuel cost.
The powertrains differ: the Land Rover Discovery 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 2018 Land Rover Discovery Diesel or the 2018 Porsche Cayenne Plug-in Hybrid?
Measured by cost to drive, the Porsche Cayenne Plug-in Hybrid. The Land Rover Discovery Diesel is rated 23 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 2018 Land Rover Discovery 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 $2,413 for the Land Rover Discovery Diesel and $2,402 for the Porsche Cayenne Plug-in Hybrid.
Land Rover Discovery Diesel vs Porsche Cayenne Plug-in Hybrid in other years
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