2026 head-to-head · Midsize & Large SUV
2026 Audi SQ8 vs Infiniti QX80
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 · 4.0L 8-cyl turbo · 8-speed automatic · 16 MPG
The 2026 Infiniti QX80 is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $3,292 a year to fuel (18 MPG), versus $3,703 for the 2026 Audi SQ8 (16 MPG). That's roughly $411 a year, or about $2,057 over five years.
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 SQ8
- Infiniti QX80
Side by side
| Audi SQ8 | Infiniti QX80 | |
|---|---|---|
| $3,703 | Your annual fuel cost | $3,292 |
| 16 MPG | Combined efficiency | 18 MPG |
| 14 MPG | City | 16 MPG |
| 20 MPG | Highway | 20 MPG |
| 540 g/mi | Tailpipe CO₂ (g/mi) | 504 g/mi |
| 3/10 | EPA fuel economy score | 3/10 |
| 3/10 | EPA greenhouse gas score | 3/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 4.0L 8-cyl turbo | Engine / motor | 3.5L 6-cyl turbo |
| 8-speed automatic | Transmission | 9-speed automatic |
| AWD | Drivetrain | RWD |
✓ 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 SQ8 vs Infiniti QX80 across model years
- Audi SQ8
- Infiniti QX80
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 SQ8 ranks 89th and the Infiniti QX80 82nd for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2026 Audi SQ8 or the 2026 Infiniti QX80?
Measured by cost to drive, the Infiniti QX80. The Audi SQ8 is rated 16 MPG combined and the Infiniti QX80 18 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2026 Audi SQ8 vs. the Infiniti QX80 per year?
At 15,000 miles a year with $3.95/gal premium gas, about $3,703 for the Audi SQ8 and $3,292 for the Infiniti QX80.
Audi SQ8 vs Infiniti QX80 in other years
More 2026 comparisons
Audi SQ8 vs…
Or compare the 2026 Audi SQ8 with anything else: