In the automotive world, both in Portugal and in other countries, there are always debates about the use of premium fuel versus low-cost fuel. Some people claim they are exactly the same, while others argue there are differences in engine performance. For those who prefer to save money, or for those who travel many kilometers weekly, the option is often at the most economical gas stations. However, there are also those who, from time to time, choose to fill up at a branded station with premium fuel for a change.
The big question is: are there serious consequences for the engine when always refueling with low-cost fuel? Are there really differences? And, if they do exist, do they justify the higher price? Let’s explore these questions with the support of .
Fuel in Portugal has never been exactly affordable. With the recent rise in prices, driven by the war in Ukraine, values never returned to what they were. Furthermore, taxes applied by the Portuguese Government are significantly higher than in other European countries, generating some controversy. For all these reasons, many people choose to fill up at the most economical gas stations found across the country.
Although most fuels sold in Portugal are refined in the same refineries and from the same raw material, there may be some differences, mainly with regard to additives and transport. Each fuel brand claims to have its own “secret formula” and specific transportation methods. This formula may include more or less additives, and in addition, tankers may be at different stages of cleaning.
Thus, although some mechanics and drivers warn that the use of low-cost fuels can harm the engine, the truth is that, in several studies and comparisons, such as those carried out by DECO Proteste (although the oldest study is from 2012), well Like other more recent tests, significant negative effects on engine health due to the use of low-cost fuel have never been proven.
In short, there are differences between fuels from different stations, as well as between simple fuels and additives from each brand. However, these differences are generally marginal. For example, Galp has already confirmed that its cheapest fuels meet all legal requirements.
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