As posted on Comets acknowledging 'who's going' - I thought I'd put it on here too
For those going to Lille on the return journey (Legend Motors) you’ll require a Crit'Air vignettes…
As of January this year, the stickers are in use in various French cities including LILLE, and the initiative includes bikes (& three wheelers) (although Lille “only” has an emergency scheme, meaning they can impose restrictions on vehicles without notice if pollution is expected to reach a particular level). In short, imho, it’s better to be safe than sorry. Especially as the cost (<€5) is so much lower than the potential fine (€68-€135).
https://www.rac.co.uk/drive/news/motoring-news/law-change-for-uk-drivers-in-french-cities/https://www.certificat-air.gouv.fr/enIt’s obviously up to the individual, but fines are hefty if restrictions imposed & you’re stopped without one.