What is NEDC (new European driving cycle)?
NEDC (new European driving cycle) is an older testing standard used to measure a car's fuel economy (mpg) and emissions. Starting from 2018, mpg and emissions figures from NEDC test were phased out in favour new numbers from the more challenging WLTP testing standard – which you'll need to bear in mind if you look at fuel economy figures for older cars. The switch aims to better replicate real-world economy and emissions performance.
Related glossary terms
EGR valveAn EGR valve is the main component in an engine's exhaust-gas recirculation system. Petrol and diesel engines deliberately capture some of their spent exhaust gases and flow them back into the intake alongside fresh fuel and air.Catalytic converterA catalytic converter is a part of your car's exhaust system that uses chemical reactions to turn your engine's harmful emissions into less harmful gases.DPF - diesel particulate filterA DPF (diesel particulate filter) is a filter that sits in a diesel car's exhaust system. It extracts particulates – mainly the nasty black soot you see coming from older diesel cars' exhausts – to stop them from getting into the atmosphere.