What the Crit'Air sticker classifies
Crit'Air is a round sticker placed inside the windscreen, numbered 0 to 5 according to how polluting the vehicle is, based on fuel type and registration year as shown on the registration document. Vehicles too old to be classified receive no sticker, which in practice rules out legal access to the zone.
Who is restricted, and when
Inside the A86 ring around Paris, vehicles without a sticker and the most polluting categories face restrictions on weekdays during daytime hours; weekends generally fall outside the scheme. During pollution episodes, authorities can tighten the rules at short notice, so always confirm current rules on the official Crit'Air site before you travel.
Ordering a sticker for a foreign-registered car
Foreign-plated vehicles, including rentals, also need a Crit'Air sticker, which can only be ordered through the official French government site at certificat-air.gouv.fr. You upload a scan of the registration document, pay a modest fee, and the sticker is posted to your address, so ordering well ahead of travel matters, since delivery abroad can take weeks.
Keep it handy while in Paris
- Add it to your home screen: works offline too
- Save your favourite spots
- Turn on ZFE Crit'Air alerts (free)
Fines, rentals and whether it's worth driving in
Fines apply when an unclassified or restricted vehicle is checked inside the zone, with harsher amounts for heavier vehicles, and rental agencies typically forward any fine to the renter with an added administrative fee. Given limited and costly central parking, many visitors find walking, the métro or RER-connected park-and-ride options simpler than driving into Paris.