Malta: Tests give 'inferior quality' fuel the green light

Petrol comes with an octane rating, which is a measurement of the fuel's tendency to burn in a controlled manner rather than erratically. The higher the octane rating, the more efficient the engine. A low octane rating can lead to fuel being burnt inefficiently and, worse, causing the engine to knock.

Apart from problems with lead replacement petrol and unleaded petrol, several motorists also complained that their diesel fuel pumps had suddenly developed leaks. Mechanics were blaming it on the quality of diesel being sold which, they said, was damaging diesel injector fuel pumps, causing the rubber seals to shrink and tear.

The MRA decided to probe the case, increasing the frequency of regular tests carried out on different fuels sold by filling stations across the island. These regular tests are carried out by the authority in line with its obligations under an EU directive related to the quality of fuel.

A spokesman for the MRA said samples taken from petrol stations and tested showed that the fuel was within the required specifications with regard to octane content.

Enemalta, which is still the only importer of petrol and diesel sold at petrol stations despite market liberalisation, also conducts regular tests on the fuel it imports. This analysis is carried out by an independent, internationally recognised laboratory.

Fuel imported by Enemalta is compliant with European standards, which are certified by the refineries that supply it and by intensive quality control and monitoring procedure. Each fuel shipment received is re-certified by an international independent laboratory, and then again from assessments of samples taken at fuel stations.