Infiniti QX80 vs Porsche Cayenne
The Porsche Cayenne is the more efficient of the two: it reaches 24 mpg combined versus 18 mpg for the Infiniti QX80, a 6 mpg advantage and costs about $900 less per year to fuel.
Across 5 measured categories, the Porsche Cayenne leads in 5. Figures are EPA test data, not manufacturer claims.
2015–2027
Infiniti QX80
Standard Sport Utility Vehicle 4WD · 30 configurations
2015–2026
Porsche Cayenne
Standard Sport Utility Vehicle 4WD · 97 configurations
Head-to-head specifications
| Metric | Infiniti QX80 | Porsche Cayenne |
|---|---|---|
| Best combined MPG | 18 mpg | 24 mpg ✓ |
| Best city MPG | 16 mpg | 21 mpg ✓ |
| Best highway MPG | 20 mpg | 29 mpg ✓ |
| Lowest annual fuel costEPA estimate at 15,000 miles per year | $4,200 | $3,300 ✓ |
| Lowest CO2 output | 504 g/mi | 174 g/mi ✓ |
| Engines offered | SIDI, SIDI; MDPV, SIDI; MDPV (Curb Weight >6000 lbs), SIDI; Over 6000 lbs curb weight | SIDI, SIDI; PHEV, 4.0, 3.0 |
| Transmissions | Automatic (S9), Automatic (S7) | Automatic (S8), Automatic (AM8) |
| Drivetrains | 4-Wheel Drive, Rear-Wheel Drive | All-Wheel Drive |
| Fuel types | Premium | Premium, Premium and Electricity, Premium Gas or Electricity |
| EPA class | Standard Sport Utility Vehicle 4WD | Standard Sport Utility Vehicle 4WD |
| Years covered | 2015–2027 | 2015–2026 |
| Configurations on record | 30 | 97 |
Source: EPA fuel economy records via fueleconomy.gov. Best-case values across all recorded configurations for each model.
QX80 vs Cayenne: common questions
Which is better on gas, the Infiniti QX80 or the Porsche Cayenne?
The Porsche Cayenne is the more efficient of the two: it reaches 24 mpg combined versus 18 mpg for the Infiniti QX80, a 6 mpg advantage and costs about $900 less per year to fuel.
Which costs less to run per year?
By EPA estimates at 15,000 miles a year, the Porsche Cayenne runs about $3,300 a year in fuel at its most efficient configuration, versus about $4,200 for the Infiniti QX80 — a difference of roughly $900 per year.
What engines do the QX80 and Cayenne offer?
Infiniti QX80: SIDI, SIDI; MDPV, SIDI; MDPV (Curb Weight >6000 lbs), SIDI; Over 6000 lbs curb weight. Porsche Cayenne: SIDI, SIDI; PHEV, 4.0, 3.0.
Are they in the same vehicle class?
Yes — the EPA classifies both the Infiniti QX80 and the Porsche Cayenne as Standard Sport Utility Vehicle 4WD, so they compete directly.
More QX80 comparisons
Comparison id: infiniti-qx80-vs-porsche-cayenne