Increasing the use of natural gas in cars and trucks would be largely ineffective in reducing greenhouse gas (GHG) emissions and air pollution, a new independent study finds. There are no GHG savings in shifting from diesel cars and trucks to compressed or liquefied natural gas (LNG) cars and trucks, while petrol-hybrid, electric and hydrogen cars deliver much greater climate benefits, the study for sustainable transport group Transport & Environment says.
Europe’s diesel cars received indirect subsidies totalling almost €27 billion last year through lower fuel taxes, a new study has found. Diesel fuel was taxed at, on average, 14 cent less per litre than petrol in 2014, according to Europe’s tax deals for diesel, which was published by T&E last month.
Europeans pay 14 cent more on average in tax for a litre of petrol than for diesel – indirectly subsidising diesel cars to the order of €2,600 per vehicle, a new study by sustainable transport group Transport & Environment (T&E) finds. This 30% tax gap in favour of diesel is a key reason for diesel cars’ majority share of new sales in Europe and leads to air quality problems where nine out of 10 diesel cars fail to meet NOx limits when driven on the road. 
The gap between petrol and diesel taxes in Europe is quite unique in the world and is the main reason why diesel engines have taken off in Europe and not worldwide. This study analyses fuel price and tax trends since 1980 and adds a specific analysis of diesel tax paid by trucks. It finds that in 2014 the gap in tax levels for diesel and petrol paid by motorists was €0.14/l, which is 30% lower than petrol per unit of energy or tonne of CO2.