Genesis G80 vs Mercedes-Benz EQS: Specs Compared
Also searched as Mercedes-Benz EQS vs Genesis G80 specs — both orientations show this same side-by-side comparison.
The Mercedes-Benz EQS is the more efficient of the two: it reaches 103 mpg combined versus 97 mpg for the Genesis G80, a 6 mpg advantage and costs about $50 less per year to fuel.
Across 4 measured categories, the Mercedes-Benz EQS leads in 3. Figures are EPA test data, not manufacturer claims.
2022–2027
Mercedes-Benz EQS
Large Cars · 32 configurations
Head-to-head specifications
| Metric | Genesis G80 | Mercedes-Benz EQS |
|---|---|---|
| Best combined MPG | 97 mpg | 103 mpg ✓ |
| Best city MPG | 105 mpg ✓ | 101 mpg |
| Best highway MPG | 93 mpg | 105 mpg ✓ |
| Lowest annual fuel costEPA estimate at 15,000 miles per year | $750 | $700 ✓ |
| Lowest CO2 output | 345 g/mi | Not available |
| Engines offered | SIDI & PFI, SIDI | Not available |
| Transmissions | Automatic (S8), Automatic (A1) | Automatic (A1) |
| Drivetrains | All-Wheel Drive, Rear-Wheel Drive | All-Wheel Drive, Rear-Wheel Drive |
| Fuel types | Premium, Electricity, Regular | Electricity |
| EPA class | Large Cars | Large Cars |
| Years covered | 2017–2027 | 2022–2027 |
| Configurations on record | 43 | 32 |
Source: EPA fuel economy records via fueleconomy.gov. Best-case values across all recorded configurations for each model.
Genesis G80 vs Mercedes-Benz EQS dimensions and size
The Mercedes-Benz EQS is 10.6 inches longer than the Genesis G80 on a wheelbase 7.9 inches longer, and 1,560.9 lbs heavier. At over 200 inches, the larger of the two is past the comfortable limit of a standard 192-inch single garage bay once you allow walking room.
| Dimension | Genesis G80 (2026) | Mercedes-Benz EQS (2026) | Difference |
|---|---|---|---|
| Length | 196.5 in | 207.1 in | 10.6 in |
| Width (excl. mirrors) | 75.6 in | 76 in | 0.4 in |
| Height | 57.9 in | 59.1 in | 1.2 in |
| Wheelbase | 118.5 in | 126.4 in | 7.9 in |
| Curb weight | 4,295 lbs | 5,855 lbs | 1,561 lbs |
Width excludes mirrors; add 8–12 inches for mirrors out. Figures are for the newest model year on record for each vehicle. See both drawn to scale.
Genesis G80 vs Mercedes-Benz EQS: what the numbers mean
Running cost over five years: at the EPA's 15,000-mile-a-year assumption the Mercedes-Benz EQS burns about $700 of fuel annually against $750 for the Genesis G80. That $50 yearly gap compounds to roughly $250 over five years and $400 over eight — often more than the price difference between two trims of the same vehicle, and the single largest running-cost line item separating these two.
City versus highway split: the Genesis G80 is the stronger commuter at 105 mpg city, while the Mercedes-Benz EQS pulls ahead on the interstate at 105 mpg highway. If most of your driving is stop-and-go traffic the city figure is the one to weigh; for long-distance highway mileage the reverse is true, and the two vehicles effectively swap places depending on how you drive.
Powertrain choice: the Genesis G80 is recorded with 2 distinct engine configurations (SIDI & PFI, SIDI), the Mercedes-Benz EQS with no. Across 43 recorded Genesis G80 configurations and 32 for the Mercedes-Benz EQS, the wider the engine spread the more the real-world fuel efficiency depends on which version you actually buy, so check the specific model year and drivetrain rather than the headline number.
Drivetrain and class: the Genesis G80 is offered with All-Wheel Drive, Rear-Wheel Drive, the Mercedes-Benz EQS with All-Wheel Drive, Rear-Wheel Drive. All-wheel drive typically costs one to two mpg combined against the same vehicle in front- or rear-wheel drive, which is worth remembering when the gap between these two is small. The EPA classes them as Large Cars and Large Cars respectively — the class drives the interior volume, cargo space and passenger space each one is measured against.
G80 vs EQS: common questions
Which is better on gas, the Genesis G80 or the Mercedes-Benz EQS?
The Mercedes-Benz EQS is the more efficient of the two: it reaches 103 mpg combined versus 97 mpg for the Genesis G80, a 6 mpg advantage and costs about $50 less per year to fuel.
Which costs less to run per year?
By EPA estimates at 15,000 miles a year, the Mercedes-Benz EQS runs about $700 a year in fuel at its most efficient configuration, versus about $750 for the Genesis G80 — a difference of roughly $50 per year.
What engines do the G80 and EQS offer?
Genesis G80: SIDI & PFI, SIDI. Mercedes-Benz EQS: no engine data on record.
Are they in the same vehicle class?
Yes — the EPA classifies both the Genesis G80 and the Mercedes-Benz EQS as Large Cars, so they compete directly.
More G80 comparisons
More EQS comparisons
Comparison id: genesis-g80-vs-mercedes-benz-eqs