2026 head-to-head · Large Car
2026 Genesis G90 Hybrid 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 · 20 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 $2,962 for the 2026 Genesis G90 Hybrid (20 MPG). That's roughly $386 a year, or about $1,932 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 Hybrid
- Mercedes-Benz S-Class Hybrid
Side by side
| Genesis G90 Hybrid | Mercedes-Benz S-Class Hybrid | |
|---|---|---|
| $2,962 | Your annual fuel cost | $2,576 |
| 20 MPG | Combined efficiency | 23 MPG |
| 17 MPG | City | 20 MPG |
| 24 MPG | Highway | 29 MPG |
| 109 cu ft | Passenger volume | 112 cu ft |
| 11 cu ft | Cargo volume | 13 cu ft |
| 441 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 |
| Hybrid | 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 Hybrid vs Mercedes-Benz S-Class Hybrid across model years
- Genesis G90 Hybrid
- 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. 11 cu ft).
Among 24 2026 large cars, the Genesis G90 Hybrid ranks 20th and the Mercedes-Benz S-Class Hybrid 15th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2026 Genesis G90 Hybrid or the 2026 Mercedes-Benz S-Class Hybrid?
Measured by cost to drive, the Mercedes-Benz S-Class Hybrid. The Genesis G90 Hybrid is rated 20 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 Hybrid vs. the Mercedes-Benz S-Class Hybrid per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,962 for the Genesis G90 Hybrid 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 11 cu ft (EPA interior volume index).
Genesis G90 Hybrid vs Mercedes-Benz S-Class Hybrid in other years
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