The short answer
Roughly 30 mpg combined or better is generally considered good gas mileage for a car, since it sits above the EPA's estimated real-world average of about 28 mpg for new vehicles. The benchmark moves by class: 30–40 mpg is strong for a sedan, 25–30 mpg for a midsize SUV, and 15–22 mpg for a full-size truck or large SUV.
What counts as good gas mileage for a car?
Roughly 30 mpg combined or better is generally considered good for a gas car, because it clears the EPA's estimated real-world average of about 28 mpg combined for new model-year vehicles. A compact or midsize sedan that returns 30 to 40 mpg combined is doing well, and anything in the 40s puts it near hybrid territory.
"Good" is relative to size and weight, so use these rough combined-MPG benchmarks for gas vehicles rather than one flat number:
| Vehicle class | "Good" combined MPG (gas) |
|---|---|
| Compact / subcompact car | 35–40+ mpg |
| Midsize sedan | 30–35 mpg |
| Compact SUV / crossover | 28–32 mpg |
| Midsize SUV | 25–30 mpg |
| Full-size SUV / large pickup | 18–22 mpg (15–22 is class-typical) |
These ranges and the roughly 28 mpg new-vehicle average come, per the EPA's 2025 Fuel Economy Guide, from the U.S. EPA and the Department of Energy's 2025 Fuel Economy Guide on fueleconomy.gov. For habits that push real-world MPG higher within any class, see how to improve your gas mileage.
What is good MPG for an SUV or truck?
For a midsize gas SUV, 25 to 30 mpg combined is good; for a full-size SUV or large pickup, 15 to 22 mpg combined is about average for the class, so 20-plus is strong. Bigger, heavier, less aerodynamic vehicles burn more fuel by design, so a truck's MPG should be judged against other trucks, not against a sedan.
- Compact crossover: 28–32 mpg combined is good; the most efficient hit the mid-30s.
- Midsize SUV: 25–30 mpg combined; three-row models tend toward the lower end.
- Full-size pickup / large SUV: 15–22 mpg combined is class-typical, with 20+ standing out.
Per the EPA's class data on fueleconomy.gov, the gap between a thrifty sedan and a full-size truck can be 15 mpg or more — which is exactly why the next two sections matter for cost.
How is EPA MPG measured and is it accurate?
EPA window-sticker MPG comes from standardized laboratory tests, which makes it a fair, apples-to-apples way to compare cars. It is reasonably accurate but not exact: real-world results vary with driving style, speed, weather, and load, and many drivers see about 10 to 15 percent lower than the sticker number in everyday use.
- Lab tests run set city and highway cycles, then adjust the results toward real-world conditions.
- Cold weather, short trips, aggressive acceleration, and roof cargo all push actual MPG below the sticker.
- Use the sticker to compare vehicles; expect your own average to land somewhat below it.
The EPA and Department of Energy explain the test methodology and why your mileage varies on fueleconomy.gov.
How much does one extra MPG save per year?
It depends heavily on where you start, because fuel use is gallons per mile, not the reverse. Over 15,000 miles a year, improving from 15 to 20 mpg saves about 250 gallons, while going from 30 to 40 mpg saves only about 125 gallons. This is the "MPG illusion": each extra mpg saves far more at the low end.
| Change | Gallons used (15,000 mi/yr) | Gallons saved |
|---|---|---|
| 15 → 20 mpg | 1,000 → 750 | 250 gal |
| 20 → 25 mpg | 750 → 600 | 150 gal |
| 30 → 40 mpg | 500 → 375 | 125 gal |
The practical takeaway: replacing a thirsty truck with a slightly more efficient one can save more fuel than upgrading an already-efficient sedan. The EPA highlights this gallons-per-mile framing on fueleconomy.gov.
What gets the best gas mileage?
Hybrids return the best gas mileage among non-electric cars. As an example, the 2026 Toyota Prius is among the highest at about 57 mpg combined — roughly double the ~28 mpg new-vehicle average. Compact hybrids routinely top 50 mpg combined, while conventional gas-only cars rarely exceed the low 40s even in the most efficient subcompacts.
- Hybrids: typically 45–57 mpg combined; the most fuel-efficient mainstream choice.
- Efficient gas-only cars: the thriftiest compacts and subcompacts reach the high 30s to low 40s.
- Plug-in hybrids and EVs: rated separately in MPGe, since they draw on grid electricity.
For current standouts, see our roundup of the most fuel-efficient gas cars, and verify any specific model on the EPA's Fuel Economy Guide.
Frequently asked questions
Is 30 mpg good gas mileage?
Yes. Roughly 30 mpg combined or better is generally considered good for a gas car, since it sits above the EPA's estimated real-world average of about 28 mpg combined for new model-year vehicles. For a compact or midsize sedan, 30 to 40 mpg combined is a strong, common range.
Is 25 mpg good for an SUV?
For a midsize gas SUV, 25 to 30 mpg combined is good, so 25 mpg is solid for the class. A full-size SUV or large pickup typically lands at 15 to 22 mpg combined, where 20-plus is strong. Heavier, less aerodynamic vehicles simply burn more fuel, so judge MPG against the class, not against a sedan.
What is the average MPG for a new car?
The EPA estimates the real-world average fuel economy of new model-year vehicles at roughly 28 mpg combined, a figure that has climbed over the past decade. That average blends fuel-efficient sedans with thirstier trucks and large SUVs, so a single car well above 30 mpg combined is doing better than the typical new vehicle.
Are EPA MPG ratings accurate in real life?
Roughly. EPA window-sticker MPG comes from standardized lab tests, so it is a fair basis for comparing cars, but real-world results vary with driving style, speed, weather, and load. Many drivers see about 10 to 15 percent lower than the sticker, and aggressive driving or cold weather widens that gap.
What car gets the best gas mileage without being electric?
Hybrids lead non-electric fuel economy. The 2026 Toyota Prius is among the highest at about 57 mpg combined, well beyond the roughly 28 mpg new-vehicle average. Compact hybrids like the Prius and similar models routinely top 50 mpg combined, far ahead of conventional gas-only cars of the same size.
Why does each extra mpg save more at low mpg?
Because fuel use is gallons per mile, not miles per gallon. Going from 15 to 20 mpg over 15,000 miles saves 250 gallons a year, while going from 30 to 40 mpg saves only 125 gallons over the same distance. This is the MPG illusion: improvements at the low end cut far more fuel.
Sources
CarsLens is editorial guidance, not individualized advice. This page draws on the U.S. EPA and Department of Energy 2025 Fuel Economy Guide and fueleconomy.gov.