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Gasoline and diesel engine. What’s better?

Gasoline and diesel engine. What’s better?

Every car enthusiast who plans to buy a car asks the question: “Which engine is better: diesel or gasoline?” It is difficult to find an unequivocal answer, since the choice of a specific power unit depends on many factors: the type of car body, its purpose, the characteristics of the area where the car will be operated, etc..

Engines of any type have their own advantages and disadvantages, so take your choice seriously, because the fuel consumption of a vehicle, its acceleration time to 100 km / h, maximum speed and other important characteristics depend on the engine..

How motors work.

Both diesel and gasoline power units are internal combustion engines.

In a gasoline engine, the air / fuel mixture is formed in the intake manifold, that is, outside the cylinder. At the end of the compression stroke, gasoline and air vapors are mixed. This homogeneous mixture is evenly distributed throughout the volume.

The result of compression is an increase in the temperature of the mixture to 500˚C – this figure is lower than the ignition temperature of gasoline. The spark is given by the spark plugs – the mixture ignites.

Only air is compressed in the cylinder of a diesel engine at a pressure of 30–50 bar. As a result of compression, the air temperature rises to 900˚С. At the same time, diesel fuel is sprayed in the combustion chamber before the piston top dead center.

Small droplets of liquid evaporate, a fuel-air mixture is formed, which is called heterogeneous – it spontaneously ignites and burns.

Engine efficiency and power.

Combustion of the working mixture in a diesel engine is more efficient. This is possible due to the high compression ratio: 20 units for diesel versus 10 units for gasoline. The efficiency of the diesel engine is 40% higher and the fuel consumption is 20% lower.

The gasoline unit is characterized by more power.

Due to the high pressure during the combustion of fuel, diesel engines create more noise and vibrations, but the situation is saved by the high-quality sound insulation of the car..


Diesel versions of internal combustion engines are considered more environmentally friendly. Modern units fully comply with Euro-4 standards and are equipped with a particulate filter, which minimizes the impact on the environment.


The difference between diesel and gasoline is that diesel evaporates more slowly, which reduces the likelihood of fire. In addition, the ignition system is not used in diesel units..


In theory, a diesel engine is more durable due to a rigid and durable cylinder block, crankshaft, cylinder-piston

group elements, and cylinder head. However, this characteristic directly depends on the quality of the diesel fuel. From this point of view, the gasoline unit is less whimsical and more resistant to low quality fuel..

The diesel engine, unlike its gasoline counterpart, does not tolerate low temperatures. Already at -15˚C, summer diesel fuel thickens and stops passing through the fuel filter, as a result of which the car refuses to start. However, the problem has a simple solution – the use of special fuels or the installation of modern heating systems. In addition, diesel engines take a long time to warm up, so the interior will become warm only after 10-15 minutes of heavy traffic.

If you live in an area where severe frosts are not rare, give preference to a gasoline installation.

In addition, diesel is not afraid of water, since electricity in such motors is used only for starting. That is why SUVs and crossovers are equipped with diesel units..


Owners of cars with diesel engines have to change filters and oils more often and check the compression in the cylinders. Such units are distinguished by a complex design, so the car service specialists will not be able to fix every breakdown. Diesel engine repairs tend to be more expensive.

Diesel requires a lot of capital investment, but only if we talk about the short term. If you buy a car for a long time (from 5 years) and plan to drive at least 20 thousand kilometers a year, then diesel will save you money due to its low fuel consumption.

The cost.

Diesel is more expensive than gasoline, but keep in mind that maintenance of such an engine will require large capital investments..

Diesel or gasoline: pros and cons.

Petrol engines.



Diesel Engines.

Which is better? Which engine is more reliable? Each car enthusiast will answer these questions independently, based on their priorities – power or economy, low or high frost resistance, etc.

An ideal engine is a unit that combines the advantages of diesel and gasoline engines.

We draw your attention to the fact that all information presented on this website is for informational purposes only and under no circumstances is a public offer determined by the provisions of Art. 437 of the Civil Code of the Russian Federation. For detailed information on the availability and cost of the specified goods and (or) services, on the conditions and timing of promotions, please contact the managers at the dealerships of FAVORIT MOTORS Group. You can find the addresses and phone numbers of the centers in the “Contacts” section. KIA FAVORIT MOTORS operates on the territory of the Russian Federation in accordance with the legislation of the Russian Federation.

The offered goods / services / are available for receipt on the territory of the Russian Federation. Monitoring of consumer behavior of entities located outside the Russian Federation is not conducted.

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