The dimensions of the Peugeot 208, in particular the width (-2 cm) and the height (-1 cm compared with the 207), its volumes which have been designed with particular attention, the care given to each of its parts (shields under the body, spoiler on certain versions, etc.) permit maximum optimisation of its aerodynamics. So, the best versions have a CdA of 0.61 (Cd of 0.29), which positions it among the best in its segment and which, again, favours fuel consumption and CO2 emissions.