Mercedes-Benz averages 20.4 mpg combined across 34 petrol and diesel models (1984–2027). The best on record does 30 mpg, the thirstiest 11 — a yearly fuel gap of about $2,211. Its 7 electric models sit apart at 91 MPGe — 37 kWh per 100 miles, about $755 a year to charge, which is $1,127 less than the average Mercedes-Benz costs to fuel.
What that actually costs
What a Mercedes-Benz costs to feed, at 12,000 miles a year and $3.20 a gallon.
| Measure | Value |
|---|---|
| Average combined | 20.4 mpg |
| Fuel per year | $1,882 |
| Most frugal on record | 30 mpg — $1,280 a year |
| Thirstiest on record | 11 mpg — $3,491 a year |
| Its electric models | 91 MPGe — $755 a year to charge |
Mercedes-Benz models by gas mileage
From the most frugal down. The yearly figure is what the fuel actually costs at 12,000 miles.
The electric Mercedes-Benzs, measured differently
Mercedes-Benz has 7 models that never visit a filling station, averaging 91 MPGe. That figure looks four times better than the 20.4 mpg the petrol Mercedes-Benzs manage, but the two are not the same unit — so we keep them apart and price the electric ones in kilowatt-hours.
| Model | MPGe | kWh / 100 mi | Charging per year |
|---|---|---|---|
| Mercedes-Benz CLA-Class | 26.7 | $545 | |
| Mercedes-Benz 350 | 35.4 | $722 | |
| Mercedes-Benz 300 | 36.8 | $751 | |
| Mercedes-Benz 500 | 37.2 | $759 | |
| Mercedes-Benz B-Class | 40.1 | $818 | |
| Mercedes-Benz 400 | 42.7 | $871 | |
| Mercedes-Benz G-Class | 54.4 | $1,110 |
MPG is a number. Dollars per year is the answer.
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How we count
Mercedes-Benz rests on 655 EPA ratings covering 34 models from 1984 to 2027, plus 7 electric ones counted separately in MPGe. The laboratory numbers are EPA's and go in unchanged; the money is ours, at 12,000 miles a year and $3.20 a gallon. Full method.
Frequently asked questions
What is the average Mercedes-Benz gas mileage?
20.4 mpg combined across 34 models and 655 EPA ratings, from 1984 to 2027 — 43 model years in one figure, which is why it sits below what a new Mercedes-Benz does today.
Which Mercedes-Benz model is the most economical?
The Mercedes-Benz A-Class at 28.3 mpg, about $1,357 a year in fuel, against the 600 at 13.3 mpg and $2,887 — a gap of $1,530 a year between the two ends of the same badge.
How much does a Mercedes-Benz cost to run?
About $1,882 a year in fuel, at 12,000 miles and $3.20 a gallon. Over five years that is $9,410, before a single service.
Does Mercedes-Benz make anything electric?
Yes — 7 models, rated 91 MPGe rather than in mpg, which works out to 37 kWh per 100 miles and roughly $755 a year at the socket. That is $1,127 less than the average petrol Mercedes-Benz, though the two ratings are not in the same unit.
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