2026 Infiniti QX80 2WD: MPG and fuel economy
The 2026 Infiniti QX80 2WD is rated by the U.S. Environmental Protection Agency at 18 combined MPG, with 16 MPG in the city and 20 MPG on the highway. That lands well below the average for cars in the Standard Sport Utility Vehicle 2WD class in the same model year.
This page collects every fuel-economy figure the EPA publishes for the 2026 Infiniti QX80 2WD. Below you will find the headline combined, city, and highway MPG, the estimated annual fuel cost at three different driving levels, the tailpipe CO₂ emissions, and a full breakdown of the engine and drivetrain. If you want to know whether this generation got more or less efficient over the years, the year-over-year table further down covers every model year the EPA has rated.
Key takeaways
- Returns 61% worse combined MPG than the average car in the Standard Sport Utility Vehicle 2WD class for the 2026 model year (46.7 MPG class average).
- The most efficient car in the Standard Sport Utility Vehicle 2WD class for the 2026 model year is the Audi Q4 45 e-tron at 115 MPG.
- EPA estimates this car costs around $8,500 more in fuel over five years than an average new vehicle of the same model year.
- Requires premium gasoline, which typically adds about 40 to 60 cents per gallon to the EPA's annual fuel cost estimate.
Fuel economy at a glance
These are the EPA's official ratings for the 2026 Infiniti QX80 2WD. The numbers come from a standardised laboratory test cycle and are the same figures that appear on the window sticker of every new car. Real-world mileage varies with driving style, weather, fuel quality, and how heavily loaded the car is.
Combined MPG is a 55/45 weighted blend of the city and highway test cycles. The EPA uses it as the single number you can compare across the entire dataset, including hybrids and EVs (which use the equivalent MPGe figure).
| Combined MPG | 18 MPG |
| City MPG | 16 MPG |
| Highway MPG | 20 MPG |
| Annual fuel cost | $3,850 |
| Tailpipe CO₂ | 504 g/mi |
| Fuel type | Premium |
How the 2026 Infiniti QX80 2WD compares
The 2026 Infiniti QX80 2WD returns 18 combined MPG. Cars in the Standard Sport Utility Vehicle 2WD class for the same model year average 46.7 MPG, which puts this car behind the class average by about 61%.
The most efficient car in the Standard Sport Utility Vehicle 2WD class for the 2026 model year is the Audi Q4 45 e-tron at 115 MPG. The bar chart below puts the Infiniti QX80 2WD alongside the class best and the class average so you can see the full picture.
For broader context, the average new car of the 2026 model year (across all classes) returns 45.5 MPG. Larger vehicles pull the all-cars average down, so do not use that figure on its own to judge a small car or a hybrid. The full list of the most efficient cars of the 2026 model year is on its own page.
Annual fuel cost across driving patterns
The headline annual fuel cost the EPA publishes assumes 15,000 miles of driving per year and a fuel mix of 55% city and 45% highway. The dollar figure is calculated using the EPA's current reference price for premium gasoline, which is $4.61/gallon. EPA updates that reference periodically rather than tracking live pump prices, so treat it as a window-sticker estimate rather than today's pump number.
The table below scales the EPA's number to three common driving patterns. The combined MPG and the reference fuel price stay constant, only the annual mileage changes. To get a current-prices estimate, take your local gas price and multiply by 833.3 gallons (the car's annual consumption at the rated MPG).
| Driving pattern | Estimated annual fuel cost |
|---|---|
| Light driver, 7,500 miles per year | $1,925 |
| Average driver, 15,000 miles per year | $3,850 |
| Heavy driver, 25,000 miles per year | $6,417 |
Year-over-year MPG for the Infiniti QX80 2WD
The EPA has rated the Infiniti QX80 2WD across 13 model years, from 2014 Infiniti QX80 2WD through 2026 Infiniti QX80 2WD. The numbers below are the best combined MPG figure the EPA published for each year, which lets you see when the car was at its most efficient and how recent generations stack up.
Combined MPG has stayed in roughly the same range across the run. The peak rating came with the 2025 Infiniti QX80 2WD at 18 MPG.
| Year | Combined MPG | Open year page |
|---|---|---|
| 2026 | 18 MPG | this page |
| 2025 | 18 MPG | 2025 Infiniti QX80 2WD |
| 2024 | 16 MPG | 2024 Infiniti QX80 2WD |
| 2023 | 16 MPG | 2023 Infiniti QX80 2WD |
| 2022 | 16 MPG | 2022 Infiniti QX80 2WD |
| 2021 | 16 MPG | 2021 Infiniti QX80 2WD |
| 2020 | 16 MPG | 2020 Infiniti QX80 2WD |
| 2019 | 16 MPG | 2019 Infiniti QX80 2WD |
| 2018 | 16 MPG | 2018 Infiniti QX80 2WD |
| 2017 | 16 MPG | 2017 Infiniti QX80 2WD |
| 2016 | 16 MPG | 2016 Infiniti QX80 2WD |
| 2015 | 16 MPG | 2015 Infiniti QX80 2WD |
| 2014 | 16 MPG | 2014 Infiniti QX80 2WD |
Compare against other Standard Sport Utility Vehicle 2WD for 2026
If you are cross-shopping the 2026 Infiniti QX80 2WD, the most useful comparison is against the other cars in the Standard Sport Utility Vehicle 2WD class for the same model year. The list below shows the highest-MPG peers, ranked from most to least efficient. Click any of them to open its full page.
The Audi Q4 45 e-tron leads this group at 115 MPG, 97 MPG ahead of the 2026 Infiniti QX80 2WD.
Specifications
The 2026 Infiniti QX80 2WD runs a 3.5-liter 6-cylinder turbocharged engine paired with a automatic (s9), sending power through rear-wheel drive.
Engine, transmission, and drivetrain together drive most of the variation in fuel economy across trims. A larger engine moves the car with less effort but burns more fuel. A turbo lets a small engine punch above its weight, often without much MPG penalty. All-wheel drive adds traction and weight, and usually costs a couple of MPG compared with two-wheel drive of the same engine.
- Vehicle class
- Standard Sport Utility Vehicle 2WD
- Engine
- 3.5L 6-cylinder turbocharged
- Transmission
- Automatic (S9)
- Drivetrain
- Rear-Wheel Drive
- Fuel type
- Premium
- Annual petroleum use
- 16.5 barrels per year
- Start-stop system
- Yes
Common questions about the 2026 Infiniti QX80 2WD
Quick answers to the questions people most often search for when looking up the 2026 Infiniti QX80 2WD.
-
Is the 2026 Infiniti QX80 2WD fuel efficient?
Not particularly. The 2026 Infiniti QX80 2WD returns 18 combined MPG, which trails the average car in the Standard Sport Utility Vehicle 2WD class for the same model year by about 61%. -
What MPG does the 2026 Infiniti QX80 2WD get?
The EPA rates the 2026 Infiniti QX80 2WD at 18 combined MPG, 16 MPG in city driving, and 20 MPG on the highway. Real-world numbers depend on your driving style, the weather, and how loaded the car is. -
How much does it cost to fuel a 2026 Infiniti QX80 2WD per year?
The EPA estimates an annual fuel cost of $3,850 for the 2026 Infiniti QX80 2WD. That figure assumes 15,000 miles of driving per year, a 55% city and 45% highway split, and the EPA's published average fuel price for the rated fuel grade. -
Does the 2026 Infiniti QX80 2WD require premium gas?
Yes. The EPA lists the 2026 Infiniti QX80 2WD as requiring premium gasoline. Running it on regular can reduce performance and may affect engine warranties, so it is not a recommended way to save at the pump. -
Has the Infiniti QX80 2WD become more fuel efficient over time?
Combined MPG has stayed close to flat across the run. Both the earliest (2014 Infiniti QX80 2WD, 16 MPG) and most recent (2026 Infiniti QX80 2WD, 18 MPG) versions sit in the same range. -
How much CO₂ does the 2026 Infiniti QX80 2WD emit?
Tailpipe CO₂ emissions are 504 g/mi. Multiplied across a typical year of driving (15,000 miles) that works out to about 7,560 kilograms of CO₂. -
What is the difference between the city and highway MPG of the 2026 Infiniti QX80 2WD?
City driving returns 16 MPG and highway driving returns 20 MPG, a gap of 4 MPG. The two figures are close enough that the car will hold its rated efficiency well across most driving patterns. -
What engine is in the 2026 Infiniti QX80 2WD?
The 2026 Infiniti QX80 2WD has a 3.5-liter 6-cylinder turbocharged engine (EPA description: SIDI). -
What transmission and drivetrain does the 2026 Infiniti QX80 2WD have?
The 2026 Infiniti QX80 2WD comes with a automatic (s9) transmission and rear-wheel drive. -
How does the 2026 Infiniti QX80 2WD compare to the best car in its class?
The most efficient car in the Standard Sport Utility Vehicle 2WD class for the 2026 model year is the Audi Q4 45 e-tron at 115 combined MPG. The Infiniti QX80 2WD returns 18 MPG, a gap of 97 MPG. If you are comparing on fuel economy alone, the class leader is worth a look.
Source: U.S. EPA fuel economy dataset. Annual fuel cost figures assume 15,000 miles of driving per year and a 55% city, 45% highway split. Real-world mileage varies with driving conditions, vehicle maintenance, fuel quality, and driver behaviour.