Mercedes-Benz SL-Class Plug-in hybrid
The window sticker shows one number. This car has three — 18 MPG with a flat battery, 29 MPGe on electricity, and a blend of the two that assumes you drive 25% of your miles on the battery. Which one applies to you is decided by how often you plug in, not by the EPA.
Your cost per mile
Every model year
| Year | Gas only | MPGe | EPA assumes | Elec range | kWh/100mi | SL-Class Hybrid |
|---|---|---|---|---|---|---|
| 2025 | 18 | 29 | 25% | 11 | 43 | 22 |
Straight from the EPA certification database, one row per model year, showing the best-rated version of each. Trims with identical figures are collapsed.
Cars people put next to this one
There is a Mercedes-Benz SL-Class Hybrid as well — the same car with a different powertrain, and the figures for both are on each page.
Cars the EPA groups with this one
Federal class: minicompact cars.
More from Mercedes-Benz
Every Mercedes-Benz the EPA has rated.
How this is worked out
Your electric share is your daily electric miles over your daily miles, capped
at the 11-mile rated range per charge. That share is costed at the electricity
price and the rest at the gasoline price. The kWh figure is EPA's combE, measured
at the wall, so charging losses are already inside it — you are not paying for
them twice.
Every figure comes from the U.S. EPA's public fuel economy data. We add no estimates of our own; a missing number shows as a dash rather than a guess.
Add your numbers
Federal data has at most a handful of owners per car and nothing at all on servicing. If you own one, send what you actually get. It goes on this page with the sample size next to it.
Your car's real number
Every figure on this page is an EPA lab rating. What your car actually does depends on your roads, your right foot, and its maintenance history. Carvico calculates your true MPG from your own fill-ups — kept completely private on your iPhone and iCloud.