Back in July 2016, PSA released real-world fuel consumption figures for 30 Peugeot, Citroen and DS models. To fulfil the commitment they made back then, the Group have now published the test protocol for measuring real-world fuel consumption to calculate the average real-life fuel consumption of the average customer. [Source: Green Car Guide – Oct’16]

http://www.greencarguide.co.uk/2016/10/psa-group-publishes-protocol-measuring-real-world-fuel-consumption/