2026 · Large Car · Gas
2026 Genesis G90 MPG & fuel economy
The 2026 Genesis G90 is a large car with one EPA-rated configuration. The most efficient version returns 21 MPG combined (18 city / 26 highway) on premium gasoline. Efficiency is unchanged from the 2025 model. Among 24 large cars rated for 2026, it ranks 19th for lowest fuel cost. At 15,000 miles a year with $3.95/gal premium gas, it costs about $2,821 a year to fuel.
What will it cost you?
Your mileage and prices are saved and used across the site.
Fuel average
The 2026 Genesis G90's fuel average is 8.9 km/L (11.2 L/100 km), or 21 MPG combined: 7.7 km/L in the city and 11.1 km/L on the highway.
| MPG | km/L | L/100 km | |
|---|---|---|---|
| City | 18 | 7.7 | 13.1 |
| Highway | 26 | 11.1 | 9.0 |
| Combined | 21 | 8.9 | 11.2 |
How it ranks among 2026 Large Cars
Full class ranking →Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.
G90 MPG across model years
Full history →1 EPA-rated configuration
| Configuration | Type | City | Hwy | Combined | Range | Your cost / yr |
|---|---|---|---|---|---|---|
| AWD · 3.5L 6-cyl turbo · 8-speed automatic G90 AWD |
Gas | 18 MPG | 26 MPG | 21 MPG | — | $2,821 |
Specs (most efficient configuration)
- Fuel
- Premium gasoline
- Engine / motor
- 3.5L 6-cyl turbo
- Transmission
- 8-speed automatic
- Drivetrain
- AWD
- Passenger volume
- 109 cu ft
- Cargo volume
- 12 cu ft
- Tailpipe CO₂
- 426 g/mi
- EPA fuel economy score
- 4/10
- EPA greenhouse gas score
- 4/10
2026 Genesis G90 vs. rivals
Compare the 2026 G90
With any other car from any year, including other G90 model years. Type a year to jump, e.g. "2015 Accord".
Same year, other powertrains: 2026 Genesis G90 Hybrid (20 MPG)
Frequently asked questions
What is the gas mileage of the 2026 Genesis G90?
Up to 21 MPG combined (18 city / 26 highway).
What fuel does the 2026 Genesis G90 use?
Premium gasoline (premium is required or recommended by the manufacturer).
What is the fuel average in km/L for the 2026 Genesis G90?
The 2026 Genesis G90's fuel average is 8.9 km/L (11.2 L/100 km), or 21 MPG combined: 7.7 km/L in the city and 11.1 km/L on the highway.
How much does it cost to fuel the 2026 Genesis G90 per year?
About $2,821 at 15,000 miles a year with $3.95/gal premium gas, or $18.81 per 100 miles. Use the calculator on this page to plug in your own mileage and prices.