The models chosen for testing by Green NCAP cover a range of brands from several countries and include some of the best-selling cars in their segments. The variants chosen represent common engine types and a mix of internal combustion and electric vehicles.

Green NCAP aims to assess as many cars as possible, to cover a broad range of vehicles and provide information to consumers on most popular models. Soon, Plug-in Hybrid Electric Vehicles (PHEV) will be added as this is an important sector for those interested in clean motoring.

For emissions testing, it is important to use cars that have been fully run-in, ideally with a few thousand kilometres to ensure, for example, that exhaust valves close properly on their seats and that the catalyst is working most efficiently. Currently Green NCAP uses rental cars as test vehicles. These are well-maintained, low-mileage vehicles, representative of vehicles that would be commonly see on the road. Green NCAP’s test cars are not supplied by the vehicle manufacturers, in order to be certain that they have not been tampered with and that their emissions limitation systems are exactly the same as vehicles supplied to customers.

Green NCAP Car Selection explained

Green NCAP’s test cars are not supplied by the vehicle manufacturers.

The cars are tested at one of Green NCAP’s independent laboratories. These laboratories are not owned by the vehicle manufacturers; they belong to organisations such as motoring clubs, consumer information programmes or universities. Green NCAP has ensured that all of these laboratories deliver equivalent results, so that a true comparison can be made between the cars tested there. The laboratories are located in various European countries: the UK, Spain, Switzerland, Austria, Germany, France, Italy and the Netherlands.

The laboratories are affiliated with at least one of the member organisations that form part of Green NCAP’s unique consortium. The members are described in more detail in the Green NCAP consortium page. All have an interest in promoting cleaner, more efficient transportation, and none are affiliated with the car industry.