Posts: Rental cars - Tricks

Diesel or Petrol?

Diesel or Petrol?

Whether you want to buy a new car or take a rental car the question petrol or diesel is an integral part of the selection process. The duel „gasoline-diesel - which is the better alternative” is a question of finances, but also depends on the needs and each driver.

From historical perspective both engines have an almost equal start:
Nikolasas Otto (1832-1891) created in 1876 a four-stroke gas engine, perfected by Wilhelm Maybach to a petrol engine. Back in 1877 Mr. Otto received recognition for his work by acquiring a patent for his four-stroke engine.

In 1892 Rudolf Diesel (1858-1913) invented an engine which first prototype was produced in 1893. This is the year in which Rudolf Diesel took a patent for "workflow and method of implementation for machines with an internal combustion engine.

Today, more than a hundred years after the invention of diesel and gasoline engines, the duel between the systems still hasn’t emitted a winner.

On one hand diesel engines are becoming increasingly ecological and cultivated. On the other, thanks to new injection systems, Start-Stop systems petrol engines are becoming more efficient and more economical. The race continues in full force. So the question which is better engine remains. Gasoline against diesel.

As I am a big fan of traveling I often have to rent a car and then usually I face the dilemma of what car to choose. I recently thought what engine I would choose, if I want to buy a new car. Several factors should be taken into account for the final selection. Very important for me is the reliability of the car, and then comes the car being economical.

Seeking information in forums I have found the following conclusions:

Thanks to the working concept the diesel engine is more sophisticated than the gasoline. Where in the gasoline engine the amount of the fuel-air mixture is adjusted before it is fed into the cylinder/quantitative regulation/. In the diesel engine the only thing regulated is the quantity of fuel injected into the cylinder/quality control /, which means that the diesel engines are more economical. The less fuel your car burns, the less the emissions.

If we decide to buy a car with a diesel engine, we must also take into consideration that the overhauling of the engine comes after a lot more kilometers.

On the other hand, generally a diesel engine is more difficult and sensitive compared to a petrol engine. Filters, spark plugs and other consumables have to be changed more often, hence more money are spent for its parts.

Diesel cars have always had a higher initial cost, but lower fuel consumption. Gasoline engines to achieve horsepower rely on bigger combustion chambers, more cylinders and higher fuel consumption. 
The price of the fuel could also tip the scales in either direction. At the moment, however, the price of petrol and diesel is almost the same. So maybe the question is – which engine is more profitable after a certain number of kilometers. Here again the diesel engine is the winner. But let me specify one thing.

Which Consumer Association published a research which shows that diesel cars are far more expensive to operate and maintain, as believed. According to the English their higher cost compared with petrol modifications shall be repaid by the lower fuel consumption after 14 years of usage.

This of course makes us speculate again on which is the better choice.

As with all other components of the car the most important thing is what the driver prefers – if he/she travels long distances, if he/she prefers a fast car or wishes to rely on security and economy. All of this is an individual choice, but we can get advice from professionals when deciding to buy a new or get a rental car.