Differences between gasoline and diesel engines

When choosing to buy a car, in addition to the model, brand and design, the "engine" is another important factor that must be carefully considered, especially diesel engines and gasoline engines, which have different engine operation characteristics and usage.

This article will introduce you to both gasoline and diesel engines, and compare their differences so that you can make an appropriate decision.

What are gasoline engines and diesel engines?

Gasoline engines
A gasoline engine is an engine that uses gasoline, ethanol or gasohol, which are lighter fuels than diesel.

Diesel engines
A diesel engine is an engine that uses diesel as fuel, which has a higher energy density than gasoline because it goes through less refining processes.

What are the differences between diesel engines and gasoline engines?

If we compare the differences between gasoline and diesel engines, they can be divided into 3 main points as follows:

Engine operation characteristics
A gasoline engine consists of a spark plug that acts to ignite the fire to burn a mixture of air and gasoline. The engine has a higher engine speed, resulting in more power and maximum speed.

A diesel engine does not have a spark plug, but uses heat from highly compressed air to ignite diesel fuel. The engine has a lower engine speed, but provides higher torque.

Efficiency and fuel usage
A gasoline engine is less fuel efficient than a diesel engine, but is more efficient in accelerating and reaching high speeds.
Diesel engines More fuel efficient than gasoline engines, suitable for long-distance use due to high torque.

Environmental impacts
Gasoline engines emit less air pollution and noise than diesel engines, but do not have problems with black smoke and bad smell.
Diesel engines emit more air pollution than gasoline engines, but are noisier than gasoline engines. They often have problems with black smoke and bad smell, especially in older cars.

Checking whether a car uses a gasoline or diesel engine before deciding to buy

Compare the advantages and disadvantages of diesel engines and gasoline engines
Now that we know the different characteristics of diesel engines and gasoline engines, to make it easier to make a decision, we will tell you the advantages and disadvantages of diesel engines and gasoline engines as follows:

Gasoline engines
Advantages

Driving performance is smooth, quiet, and does not vibrate as much as diesel engines.
The price of cars using gasoline engines is usually cheaper than diesel engines.
Gasoline engines have a simple structure, fewer parts, so maintenance costs are cheaper.
Disadvantages

Consumes more fuel than diesel engines.
Gasoline engines have a shorter lifespan than diesel engines.

Diesel engines
Advantages

Diesel engines are more fuel efficient due to their high thermal efficiency.
Diesel engines have a more durable structure, so they have a longer lifespan.
Disadvantages

Diesel engines have a complex system because they have more parts, so maintenance costs are more expensive.
The price of cars using diesel engines is usually more expensive than gasoline engines.
Diesel engines emit more air pollution than gasoline engines.

Make a sure choice: Which engine is right for you?

Gasoline engines are suitable for those who mainly drive in the city, do not drive far because they have to stop and start the car often, and want quietness, acceleration, and smoothness in driving, and do not want to bear high maintenance costs.
Diesel engines are suitable for those who regularly drive long distances, focus on heavy loads, towing, and want to save on fuel in the long term, as well as want durability and rugged use.

This should make you understand the differences between gasoline and diesel engines more. For those who want to buy a used car in Bangkok, no matter what engine it is, you can conveniently choose to buy at Autovilla, a center for a variety of used car models, with a total of 3 branches.

For more information, please contact

Srinakarin Branch Tel. 097-921-9552

Romklao Branch Tel. 095-906-0633

Lamlukka Branch Tel. 092-940-5098

References

DIESEL VS. GAS ENGINES: WHICH IS BEST?. Retrieved June 24, 2024 from https://www.uti.edu/blog/diesel/gas-vs-diesel-engines
WHAT IS THE DIFFERENCE BETWEEN DIESEL AND PETROL ENGINES?. Retrieved June 24, 2024 from https://www.valvolineglobal.com/en-ksa/difference-between-diesel-and-petrol-engines/