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Does a gasoline or diesel car give better gas mileage?

Diesel cars typically give better gas mileage than gasoline cars.

Here are the average gas mileages for new cars in the United States in 2022, according to the U.S. Environmental Protection Agency (EPA):

* Gasoline cars: 25.4 MPG (miles per gallon)

* Diesel cars: 33.1 MPG

There are a few reasons for this difference.

* Diesel engines are more efficient than gasoline engines. Diesel engines operate at a higher compression ratio than gasoline engines, which means they can extract more energy from the same amount of fuel.

* Diesel fuel has a higher energy density than gasoline. Diesel fuel contains more energy per gallon than gasoline, so you can travel further on a gallon of diesel than a gallon of gasoline.

However, diesel cars also have some disadvantages compared to gasoline cars.

* Diesel cars are more expensive to buy than gasoline cars.

* Diesel cars produce more emissions than gasoline cars, including particulate matter and nitrogen oxides.

* Diesel cars can be more difficult to start in cold weather.

Ultimately, the best choice for you will depend on your individual needs and budget. If you are looking for a car that gets good gas mileage, a diesel car may be a good option. However, if you are concerned about emissions or the cost of the car, a gasoline car may be a better choice.