2026 head-to-head · Large Car
2026 Genesis G90 vs Mercedes-Benz S-Class Hybrid
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
AWD · 3.5L 6-cyl turbo · 8-speed automatic · 21 MPG
The 2026 Mercedes-Benz S-Class Hybrid is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $2,576 a year to fuel (23 MPG), versus $2,821 for the 2026 Genesis G90 (21 MPG). That's roughly $245 a year, or about $1,227 over five years.
Your numbers
Change these to match your driving and local prices. Every figure and chart on this page updates.
Fuel cost over 10 years
- Genesis G90
- Mercedes-Benz S-Class Hybrid
Side by side
| Genesis G90 | Mercedes-Benz S-Class Hybrid | |
|---|---|---|
| $2,821 | Your annual fuel cost | $2,576 |
| 21 MPG | Combined efficiency | 23 MPG |
| 18 MPG | City | 20 MPG |
| 26 MPG | Highway | 29 MPG |
| 109 cu ft | Passenger volume | 112 cu ft |
| 12 cu ft | Cargo volume | 13 cu ft |
| 426 g/mi | Tailpipe CO₂ (g/mi) | 380 g/mi |
| 4/10 | EPA fuel economy score | 5/10 |
| 4/10 | EPA greenhouse gas score | 5/10 |
| Gas | Powertrain | Hybrid |
| Premium gasoline | Fuel | Premium gasoline |
| 3.5L 6-cyl turbo | Engine / motor | 3.0L 6-cyl turbo |
| 8-speed automatic | Transmission | 9-speed automatic |
| AWD | Drivetrain | AWD |
✓ marks the better value. EPA scores run 1–10 (10 is best). Volumes come from the EPA interior volume index and aren't published for every body style.
Genesis G90 vs Mercedes-Benz S-Class Hybrid across model years
- Genesis G90
- Mercedes-Benz S-Class Hybrid
Annual fuel cost of the most efficient configuration of each model year, at your prices. Click a point to open that year.
How they differ
Per EPA interior volume figures, the Mercedes-Benz S-Class Hybrid has more cargo space (13 vs. 12 cu ft).
Among 24 2026 large cars, the Genesis G90 ranks 19th and the Mercedes-Benz S-Class Hybrid 15th for lowest fuel cost.
The powertrains differ: the Genesis G90 is a conventional gas model, while the Mercedes-Benz S-Class Hybrid is a full hybrid.
Frequently asked questions
Which is more fuel-efficient, the 2026 Genesis G90 or the 2026 Mercedes-Benz S-Class Hybrid?
Measured by cost to drive, the Mercedes-Benz S-Class Hybrid. The Genesis G90 is rated 21 MPG combined and the Mercedes-Benz S-Class Hybrid 23 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2026 Genesis G90 vs. the Mercedes-Benz S-Class Hybrid per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,821 for the Genesis G90 and $2,576 for the Mercedes-Benz S-Class Hybrid.
Which has more cargo space?
The Mercedes-Benz S-Class Hybrid, with 13 cu ft of luggage volume versus 12 cu ft (EPA interior volume index).
Genesis G90 vs Mercedes-Benz S-Class Hybrid in other years
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