Diesel engines are more efficient than gasoline engines because they burn fuel more slowly. This means diesel engines can get more work done with less fuel.
On average, diesel engines get about 20-30% more miles per gallon than gasoline engines. However, diesel fuel is typically more expensive than gasoline, so the cost savings may not be as great as you think.
The best way to decide if a diesel engine is right for you is to weigh the pros and cons carefully and compare the fuel efficiency and fuel costs of diesel and gasoline engines.
Here are a few reasons why diesel engines have better gas mileage than gasoline engines:
1. Higher compression ratio: Diesel engines have a higher compression ratio than gasoline engines, which means they can compress the fuel-air mixture more. This creates a more efficient combustion and results in better gas mileage.
2. Slower burn rate: Diesel fuel has a slower burn rate than gasoline, which means it releases its energy more gradually. This allows the engine to extract more energy from the fuel, resulting in better gas mileage.
3. Better thermal efficiency: Diesel engines have better thermal efficiency than gasoline engines, which means they convert more of the fuel's energy into usable work. This results in better gas mileage.
Diesel has better fuel economy than gasoline, typically 25% to 30% better (and gasoline engines have gotten more efficient in recent years). Diesels also have longer engine lives and hold their resale value better than gasoline vehicles.
