EEA standard re-use policy: unless otherwise indicated, re-use of content on the EEA website for commercial or non-commercial purposes is permitted free of charge, provided that the source is acknowledged (http://www.eea.europa.eu/legal/copyright). Copyright holder: European Environment Agency (EEA).
SME refers to sunflower methyl ether, which is biodiesel. RME is similar for rapeseed. GTL refers to gas-to-liquid, which is synthetic diesel made from natural gas. DME refers to di-methyl ether, which is a substitute for petrol. EtOH refers to ethanol, which is a substitute for petrol. DICI refers to a modern diesel engine and DPF to a particle filter. PISI refers to a modern petrol engine.