[ajmat]

From the NCP site. The item in bold might be the reason!

Where Does Euro NCAP Get the Cars for Testing ?

Up to 4 cars are needed for an assessment by Euro NCAP. If a car model is already on sale, Euro NCAP will generally buy cars from dealers, in the same way that consumers do. Cars are bought anonymously, either from a single dealer or from several. Once the cars are at the test laboratory, the manufacturer is informed of the vehicle identification numbers (VINs) and are asked to confirm the specification. If a production change has been made since the cars were produced, for example to an item of safety equipment, the manufacturer may ask for the current part to be fitted to the vehicle. This ensures that, when they are released, the results are representative of current production cars.