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.
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.
The European Commission has gone back on a series of commitments to reduce the environmental impacts of road vehicles. T&E says the climbdown carries the fingerprints of lobbying by the automotive industry, but will not help Europe’s car makers in the long term.
EU standards and policies play a vital role in reducing traffic accidents across Europe, but can also contribute to environmental and climate goals. This paper provides inputs to the CARS21 process, highlighting these synergies.