2021 · Midsize & Large SUV · Gas
2021 Infiniti QX80 MPG & fuel economy
The 2021 Infiniti QX80 is a midsize or large SUV offered in 2 EPA-rated configurations. The most efficient version returns 16 MPG combined (14 city / 20 highway) on premium gasoline. Across the lineup, combined ratings range from 15 to 16 MPG. Efficiency is unchanged from the 2020 model. Among 65 midsize & large SUVs rated for 2021, it ranks 61st for lowest fuel cost. At 15,000 miles a year with $3.95/gal premium gas, it costs about $3,703 a year to fuel.
What will it cost you?
Your mileage and prices are saved and used across the site.
Fuel average
The 2021 Infiniti QX80's fuel average is 6.8 km/L (14.7 L/100 km), or 16 MPG combined: 6.0 km/L in the city and 8.5 km/L on the highway.
| MPG | km/L | L/100 km | |
|---|---|---|---|
| City | 14 | 6.0 | 16.8 |
| Highway | 20 | 8.5 | 11.8 |
| Combined | 16 | 6.8 | 14.7 |
How it ranks among 2021 Midsize & Large SUVs
Full class ranking →Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.
QX80 MPG across model years
Full history →2 EPA-rated configurations
| Configuration | Type | City | Hwy | Combined | Range | Your cost / yr |
|---|---|---|---|---|---|---|
| RWD · 5.6L 8-cyl · 7-speed automatic QX80 2WD |
Gas | 14 MPG | 20 MPG | 16 MPG | — | $3,703 |
| 4WD · 5.6L 8-cyl · 7-speed automatic QX80 4WD |
Gas | 13 MPG | 19 MPG | 15 MPG | — | $3,950 |
Specs (most efficient configuration)
- Fuel
- Premium gasoline
- Engine / motor
- 5.6L 8-cyl
- Transmission
- 7-speed automatic
- Drivetrain
- RWD
- Tailpipe CO₂
- 554 g/mi
- EPA fuel economy score
- 2/10
- EPA greenhouse gas score
- 2/10
2021 Infiniti QX80 vs. rivals
Compare the 2021 QX80
With any other car from any year, including other QX80 model years. Type a year to jump, e.g. "2015 Accord".
Frequently asked questions
What is the gas mileage of the 2021 Infiniti QX80?
Up to 16 MPG combined (14 city / 20 highway); ratings range from 15 to 16 MPG depending on configuration.
What fuel does the 2021 Infiniti QX80 use?
Premium gasoline (premium is required or recommended by the manufacturer).
What is the fuel average in km/L for the 2021 Infiniti QX80?
The 2021 Infiniti QX80's fuel average is 6.8 km/L (14.7 L/100 km), or 16 MPG combined: 6.0 km/L in the city and 8.5 km/L on the highway.
How much does it cost to fuel the 2021 Infiniti QX80 per year?
About $3,703 at 15,000 miles a year with $3.95/gal premium gas, or $24.69 per 100 miles. Use the calculator on this page to plug in your own mileage and prices.