Genesis · Large cars · Gasoline
Genesis G80: MPG and annual fuel cost, 2026
Rated at 23 MPG combined for 2026, the Genesis G80 is tied for 15th of 25 large cars, in the lower half.
- 23MPG combinedtied 15th of 25 in class
- $3,550a year in fueltied 16th of 25 in class
- 382g/mile CO2
Where it stands
Compared only with the gasoline models of its class it is 5th of 11 gasoline large cars, in the upper half, ahead of 60% of the others. The median of that narrower group is 21 MPG, against 28 MPG for all large cars together.
Across every class it is tied for 86th of 180 gasoline models, in the lower half.
Genesis has 10 models in the 2026 data. This one ranks 5th of them on combined rating, against a make median of 23 MPG.
In its class, just ahead of it is the BMW 7 Series Plug-in hybrid at 24 MPG and just behind it is the Audi A8 Hybrid at 22 MPG.
Fuel cost and CO2
The file prices the fuel for its most efficient version at about $3,550 a year, assuming 15,000 miles a year with 55% of them in the city and premium gasoline at $5.48 per gallon. That is $600 more than the large cars median of $2,950, which makes it tied for 16th of 25 large cars, in the lower half.
It emits 382 g of CO2 per mile from the tailpipe; the large cars median is 298, a difference of 84 g/mile.
Rated versions
In the city the most efficient version is rated 20 and on the highway 29, 9 better on the open road. 2 versions are rated for 2026. The most efficient, G80 AWD: 2.5 L, 4 cyl, Automatic (S8), AWD, gets 23 MPG; the least efficient listed, G80 AWD: 3.5 L, 6 cyl, Automatic (S8), AWD, gets 18 MPG, a gap of 5 MPG. With the file's assumptions that gap is worth about $1,000 a year in fuel.
| Version | Combined MPG | City MPG | Highway MPG | Annual fuel cost | CO2 g/mile |
|---|---|---|---|---|---|
| G80 AWD: 2.5 L, 4 cyl, Automatic (S8), AWD | 23 | 20 | 29 | $3,550 | 382 |
| G80 AWD: 3.5 L, 6 cyl, Automatic (S8), AWD | 18 | 15 | 24 | $4,550 | 485 |
Year by year
The Genesis G80 is in the data for 8 of the 8 model years from 2019 to 2026. Its best combined rating went from 21 in 2019 to 23 MPG in 2026, up 2 MPG. The highest figure came in 2021, at 26. The number of rated versions shrank from 6 to 2. Fuel cost for the best version is $3,550 in the latest data against $3,200 in 2019, although the file applies today's fuel prices to every model year, so that change comes from the rating, not from prices.
| Model year | Versions | Best MPG | Lowest MPG | Fuel cost | CO2 g/mi | Class median |
|---|---|---|---|---|---|---|
| 2026 | 2 | 23 | 18 | $3,550 | 382 | 28 |
| 2025 | 2 | 24 | 19 | $3,400 | 377 | 26.5 |
| 2024 | 2 | 25 | 19 | $3,300 | 361 | 26.5 |
| 2023 | 3 | 26 | 19 | $3,150 | 346 | 23 |
| 2022 | 3 | 26 | 20 | $3,150 | 345 | 24 |
| 2021 | 4 | 26 | 21 | $3,150 | 345 | 23 |
| 2020 | 6 | 21 | 18 | $3,200 | 423 | 23 |
| 2019 | 6 | 21 | 18 | $3,200 | 423 | 23 |
Similar models
| Model | Powertrain | Combined MPG | Annual fuel cost | Model year |
|---|---|---|---|---|
| Mercedes-Benz S-Class Hybrid | Hybrid | 23 | $3,550 | 2026 |
| Audi A8 Hybrid | Hybrid | 22 | $3,750 | 2026 |
| BMW 7 Series Plug-in hybrid | Plug-in hybrid | 24 | $3,400 | 2026 |
| Porsche Panamera | Gasoline | 21 | $3,900 | 2026 |
| Dodge Charger | Gasoline | 20 | $3,350 | 2026 |
Compare and rank
Rankings: Large cars, Gasoline, Genesis, Gasoline large cars.
Data: US EPA and DOE, as prepared in methods and data.