The 'Monday effect’ September disappears into the pump, but follows the “alignment” price

November 13, 2013 Comments Off on The 'Monday effect’ September disappears into the pump, but follows the “alignment” price

The lower prices CNMC detected in independent operators and off-highway


Photos: Europa Press

Photos: Europa Press

The 'Monday effect', whereby Prices of petrol and diesel up that day of the week to coincide with the submission to the European Commission, disappeared in September in stations Spanish, While other phenomena persist sector, including “general price alignment” between the main operators.

These findings appear in the report tracking prices,,es,The 'Monday effect' disappears in September petrol stations,,es fuel retail market for the month of September, the first of the new Commission prepared by the National Markets and Competition (CNMC).

In addition to the disappearance in September ‘Monday effect‘, The new controller also terminating the ‘effect Friday‘, caused in this case by the offer launched Repsol during the summer period for which prices in their stations that day would be the lowest in all week.

Thus, there is no appreciable “recurrent decrease or increase in prices” on any day of the week, at least in September, said CNMC, before describing other phenomena already mentioned in previous reports.

Among them is that the regions without regional section of the hydrocarbon tax, known as 'Health cent’, offer lower prices, but not as low as would correspond.

In other words, if the regions without 'health cent', which are Aragon, Basque Country and La Rioja, applied to them this tax bracket, higher prices would. “Service stations without regional section make use of asymmetric taxation to apply higher prices”, said CNMC.

A particular case are Navarra, where does apply the 'Health cent’, but whose prices are among the lowest. This circumstance, said controller, is due to a “border effect”, since it is the “the only region in the environment where fuels are taxed to the aforementioned tax bracket”.


The report also finds that independent service stations set the lowest prices, while “continues the general alignment between the prices of the major carriers and decreases the price differential with the rest of the other operators”.

It also happens that the final price in hypermarkets is lower only for the gasoline with respect to independent, but not so in the case of diesel fuel, where it can be near 0,2 superior cents per liter. As for the type of road, highways prices are higher than those set out in them.


The CNMV also indicates that the pre-tax price of petrol and diesel are higher than the European Union average, to the point that the country is the seventh most expensive in the region.

However, “the tax burden on fuels in Spain continues to be lower than in other EU countries”, making “late prices fuels are more economical”.




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