Diesel Cars Vs. Gasoline Cars – A Detailed Comparison

Today we have roads dominated by automobiles including cars, trucks, buses, and two-wheelers. A few years before, the demand for two-wheelers was on a rise and today, cars have joined them. One of the mains reasons could be the fall in price and an increase in the availability of loans.

When it comes to purchasing a car, there are more than one type of car based on the fuel it runs on, gasoline, diesel, electric, gas, and hybrid. Among these types, the most common and in-demand has always been gasoline and diesel, and as of today, these two types of fuel are the most commonly available and comparatively cheaper than other alternatives.

If you are confused about which type of car to purchase, here is a detailed comparison between diesel and gasoline cars.

Diesel Cars vs Gasoline Cars

1. The major difference, combustion 

One of the major difference between a gasoline and diesel engine is the internal combustion itself. In both the gasoline and diesel engine, there is an internal combustion that drives the car. However, the way combustion happens in both the engines are entirely different.

Diesel engine – In a diesel-powered engine, the fuel is mixed with air and it does into the engine, where the mixture is compressed inside the cylinder and when the compression reaches a certain limit, combustion happens due to high heat. This process is called compression ignition and this combustion moves the piston and therefore, the crankshaft. This is how diesel-powered cars function.

Gasoline engine – When it comes to gasoline-powered cars, they attain the internal combustion in an entirely different way. First,the fuel and air mixture is compressed and at a certain set timing, the spark plugs ignite the mixture, which, in turn, drives the car.

The compression ignition is called knocking and it happens commonly in petrol engines, however, this could destroy the engine in the long run. But, the diesel engine is designed and built to take maximum advantage of this knocking.

2. Price difference 

As you have seen, both gasoline and petrol engines have different functioning. Both of them are built in two different ways, there is a reason for such a difference. Diesel has more density than gasoline and the energy released per unit weight while combustion is comparatively higher. This is why the mileage of diesel-powered cars are higher than gasoline-powered cars. One of the things about diesel and gasoline-powered cars is that, in the long run, the price will not matter much because, there would be a slight difference in price in the fuel, but, this difference would not matter in the long run, as diesel engine would require comparatively more maintenance than gasoline engines.

3. Horsepower vs torque 

Horsepower and torque are entirely two different things, while horsepower refers to the power of the vehicle, torque denotes the twisting force of the engine on the driveline. A large amount of torque and horsepower is great, but, not all cars come with high torque and horsepower. You should know that if your car has high horse power and less torque, then your car would too slow to get going. It is the torque power than actually gets the car going. This is one of the main reasons why most of the heavy automobiles like trucks have diesel engines. However, while diesel engines produce more torque, the product less horsepower, this is why we don’t see any diesel sports car on the market. While gasoline engines could scream and get going in less time, a diesel car cannot do such a thing.

With technology advanced so much, the manufacturers have found ways to up-come the issues diesel engine have. Today diesel cars come with efficient engines coupled with the capable transmission, which makes diesel engine comparatively better than old diesel engines.

4. Reliability 

One of the greatest disadvantages of a diesel engine is that they have to be tough to withstand the compression and explosive internal ignition. This makes the engine very heavy, which adds to the carload. This is one of the reasons for diesel cars being heavy and slow. However, today, the manufacturers have found ways to reduce engine weight. But, the weight is not as low as gasoline engines. This is why it is very important that you know, that a diesel engine could offer almost the same reliability as of gasoline engine these days. Diesel engines are comparatively very simple than gasoline engines as they come with no spark plugs and they don’t need any electrical systems. When compared to gasoline engines, a diesel-powered engine requires more maintenance. But, today, the maintenance cost has come down.

5. Pollution 

One of the major concern in the world today is global warming triggered by the rise in pollution. Today, most of the manufacturers are forced to reduce the emission in their cars, in order to keep up with government policy and regulations. When it comes to diesel engines, one of the main reasons why they have a hard time on the market is because the emissions from them are comparatively very higher than gasoline engines. However, with technology advanced so much, the emissions today is comparatively low. But, still, the diesel engines are dirtier as, diesel cannot burn, as cleanly as, gasoline. If you are a person concerned about pollution, it is best recommended that you avoid diesel cars and go for gasoline cars.

6. Noise 

No one likes a loud car, the first diesel cars available on the market sounded like large trucks. It did not matter if it was a Mercedes-Benz or a Porsche the sound was horrible, however, the modern diesel engines are comparatively quiet. This is one of the reasons why the demand for diesel cars have increased over the past few years. When it comes to gasoline engines, they were always silent, but when it comes to diesel engines they still produce some sound. Therefore, until the technology is advanced further, it is better to avoid diesel cars.

One of the important things about diesel cars is that it comes with noise and at the same time vibration, which, in turn, would mean more frequent maintenance.

Now you know the details on gasoline and diesel cars, here are some of the pros and cons of each.

Pros of diesel cars 

  • Better overtaking power and towing ability
  • Fuel efficient
  • Lower co2 emissions

Cons of diesel cars 

  • High vibration
  • Louder than gasoline cars
  • In the long run, diesel cars are expensive than petrol cars

Pros of gasoline cars 

  • Gasoline cars are cheaper than diesel cars
  • Gasoline cars require lesser maintenance
  • Gasoline engines are quiet than a diesel engine
  • Gasoline cars are easier to drive

Cons of gasoline cars 

  • The gasoline engine produces less torque than diesel engines
  • Gasoline engine demand more frequent gear change than diesel engines
  • Co2 emission in gasoline is comparatively higher than a diesel engine

Bottom line 

It is a very important thing that there are different types of cars available on the market based on the fuel that powers the car. When it comes to diesel and gasoline cars, you would find the major differences mentioned above. Consider those facts and then select an appropriate car.

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