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New petrol engines cause more air pollution than dirty diesels

New Gasoline Direct Injection (GDI) petrol engines for cars emit more cancer-causing particles than modern diesel engines, a new study by independent vehicle researchers TÜV Nord revealed today. While GDI engines make petrol cars more fuel-efficient and emit less CO2, the findings show that these new petrol engines typically release around 1,000 times more harmful particles than traditional petrol engines and 10 times more than new diesels.

Published on November 28, 2013 - 10:55

Particle emissions from petrol cars

Vehicle tests show that without the use of gasoline particulate filters (GPF) the number of particles emitted from gasoline direct injection (GDI) engines is likely to exceed future European emissions limits, known as Euro 6 standards. Nowadays, particle emissions from these new petrol engines are higher than equivalent diesel vehicles. The cost of a filter to eliminate particle emissions is low (around €40), with no fuel economy penalty. Despite this, carmakers are delaying fitting filters on GDI cars and instead rely on manipulating tests. Their reluctance is worsening urban air pollution and reducing the health benefits of the new limits.

Published on November 28, 2013 - 10:04

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