Are Diesel Cars More Fuel-Efficient?

[Damien]

Fuel efficiency in cars mainly depends on the engine displacement. Diesel cars of the same displacement are indeed more fuel-efficient than gasoline cars. For example, a 1.8-2.0L diesel car consumes about 5-6L per 100 kilometers, while a gasoline car can consume up to around 10L. Here is some relevant information about diesel cars: 1. Advantages of diesel cars: More complete combustion, less prone to carbon buildup; no spark plugs are used, reducing maintenance costs, and they can save nearly one-third of fuel consumption compared to gasoline cars of the same displacement. 2. Disadvantages of diesel cars: The main reason most small cars use gasoline engines is that diesel engines are louder and produce more vibration, not because they are less fuel-efficient or less environmentally friendly. Additionally, diesel engines have stronger power, while gasoline engines run more smoothly.