How to choose a car: petrol or diesel?

Knowing all about the advantages and disadvantages of petrol and diesel engines, it is much easier to make a choice in favor of one of them when buying a car.

2015-11-18 16:59:45 27

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About 30% of the cars in the world equipped with diesel engines in the post-Soviet space, their share in the total number ranges from 10% to 20%. As abroad, so we have observed a steady trend towards the increase in the number of cars with diesel engines. The growing popularity of diesel engines is explained simply — every year the prices for hydrocarbons is steadily increasing, environmental standards for emission of harmful substances by vehicles are constantly increasing, the fuel consumption of diesel is much less than a similar car with a petrol engine, and the possibility of fueling biofuel based on rapeseed is considerable impetus for the decision about switching to a car with a diesel engine.

Differences between diesel and gasoline engines

The main difference lies in the type of fuel and method of ignition. On gasoline engines, the combustible mixture of gasoline vapor and air, lights from electrical sparks, which produce spark plugs. In diesel engines the same compressed mixture of air and fuel is ignited without sparks, solely due to its high temperature. This difference is due to differences in designs of engines: the parts and components of diesel engines are more massive and overbuilt, the petrol engines are significantly lighter and smaller in size from their diesel counterparts.

the cost of the engine and fuel

A car with a diesel engine is by 15-30% higher than the same car with a gasoline engine. Therefore, in order to benefit from the efficiency of the diesel engine, the cost of fuel and the flow rate of which is significantly lower than gasoline, have to initially overpay quite a significant difference in price compared to a similar model based on the gasoline engine.

the Resource of operation and maintenance

Diesel engines are much tougher than their gasoline counterparts. So, many of them run about 1 million miles before the first overhaul, at that time, as a resource of gasoline is from 200 to 400 thousand km. At the same time, diesel engines are very demanding of fuel quality. Fill it with diesel fuel of questionable quality from a friend of the truck driver or the tractor operator can immediately diesel engine in disrepair, especially quickly breaks down from poor quality diesel fuel injection nozzle fuel system. The service in the service centers and one HUNDRED would be cheaper for gasoline engines, for similar work on the repair and maintenance of diesel you will have to pay money for 10-20% more, as diagnosis and repair of diesel engines requires more expensive equipment. Yes and to be there for service and undergoing planned maintenance of THE diesel engines have much more often than cars on petrol.


Gasoline engines, in addition to less weight, have more power and less noise, and in the bitter cold much easier start. In winter, with a diesel engine can cause problems, especially if it is seasoned with summer fuel, which arefinished at a temperature of -50 C in contrast to winter, which solidifies at -350 C. Immediately after starting the diesel engine produces a characteristic rumbling sound, disappearing only after the full warming up of the diesel engine, which will take considerably longer (about 10 minutes) time than to warm the gasoline engine. It should be noted that the new modern diesel engines do not have this drawback due to the design features and the use of new technologies. At the same time, unlike gasoline, in a vehicle with a diesel engine you can start driving before its warm because diesel power and torque close to the maximum value even at low revs.

Summing up

To opt for a car with a gasoline engine should be in if not very actively using the machine, without daily and long trips, and especially if in the foreseeable future planned to sell the car and replace it with a new one. If you intend almost not to part with your four-wheeled friend, "twirling" for the year up to fifty thousand kilometers, and its sales are not included in your plans, purchase of a car with a diesel engine will be the only right decision, as the low cost of fueling and moderate the appetite of the diesel will compensate for the initial overpayment for the car and its maintenance. Good luck to you! No nail, no wand!

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