2026 head-to-head · Midsize & Large SUV
2026 Audi Q8 vs Porsche Cayenne
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 · 19 MPG
On fuel costs these two are nearly tied. Driving 15,000 miles a year with $3.95/gal premium gas, the most efficient 2026 Audi Q8 (19 MPG) costs about $3,118 a year to fuel and the 2026 Porsche Cayenne (19 MPG) about $3,118.
Your numbers
Change these to match your driving and local prices. Every figure and chart on this page updates.
Fuel cost over 10 years
- Audi Q8
- Porsche Cayenne
Side by side
| Audi Q8 | Porsche Cayenne | |
|---|---|---|
| $3,118 | Your annual fuel cost | $3,118 |
| 19 MPG | Combined efficiency | 19 MPG |
| 17 MPG | City | 17 MPG |
| 23 MPG | Highway | 23 MPG |
| 459 g/mi | Tailpipe CO₂ (g/mi) | 469 g/mi |
| 4/10 | EPA fuel economy score | 4/10 |
| 4/10 | EPA greenhouse gas score | 4/10 |
| Hybrid | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 3.0L 6-cyl turbo | Engine / motor | 3.0L 6-cyl turbo |
| 8-speed automatic | Transmission | 8-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.
Audi Q8 vs Porsche Cayenne across model years
- Audi Q8
- Porsche Cayenne
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 91 2026 midsize & large SUVs, the Audi Q8 ranks 78th and the Porsche Cayenne 77th for lowest fuel cost.
The powertrains differ: the Audi Q8 is a full hybrid, while the Porsche Cayenne is a conventional gas model.
Frequently asked questions
How much does it cost to fuel the 2026 Audi Q8 vs. the Porsche Cayenne per year?
At 15,000 miles a year with $3.95/gal premium gas, about $3,118 for the Audi Q8 and $3,118 for the Porsche Cayenne.
Audi Q8 vs Porsche Cayenne in other years
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