Low-emission zones explained: can you drive into European cities?

Short answer: yes, you can still drive into most European cities. The catch is that the rules change at the city line, and they change again at the next border. A low-emission zone is a marked area where your vehicle has to meet a minimum emissions standard, proven either by a sticker on the windscreen or by a camera reading your plate. Get the paperwork wrong and the fine turns up weeks later, often forwarded by the rental company with an admin fee stapled on top.

There is no single European sticker, which is the part that trips people up. France runs Crit'Air, Germany runs the Umweltplakette, Italy layers newer low-emission zones on top of its old limited-traffic zones, and Belgium and the Netherlands use camera-only systems with no sticker at all. Jonas keeps a plastic wallet of these things in the door pocket of the van, one per country, because none of them talk to each other.

How the stickers work, country by country

In France the sticker is the Crit'Air, officially the certificat qualite de l'air. Order it from certificat-air.gouv.fr and nowhere else. That is the only official site, and there is a small industry of copycat pages charging four times the price for the same thing. There are six classes, numbered 0 to 5 by Euro standard and colour-coded, and the sticker goes bottom-right on the inside of the windscreen. It is valid for the life of the vehicle, so you buy it once. Foreign plates need it too, and the order form runs in English and German.

In Germany you want the green Umweltplakette. There used to be red and yellow versions as well, but only green gets you into a zone now. You can buy it at TUV or DEKRA testing stations, at many garages and registration offices, or online before you travel. One detail Jonas likes: you only need it once you actually enter a marked Umweltzone. Passing through on the motorway does not count, even if the road runs straight through the city.

Italy is the muddle. Two different things overlap. The ZTL (zona a traffico limitato) is a historic-centre access restriction that has nothing to do with emissions and everything to do with permits, and it exists in hundreds of towns. Then there are newer low-emission zones, like Milan's Area B, plus Milan's Area C, which is really a congestion charge. There is no national sticker. Cameras read your plate and match it against a database, so with a foreign car you often cannot tell you did anything wrong until the letter arrives.

Paris, Milan and what changes at the city line

To drive into Paris you need a Crit'Air. The zone covers the area inside the A86 ring road and runs Monday to Friday, 8am to 8pm, minus public holidays. The oldest classes are banned and the threshold has been tightening year on year. One honest wrinkle: in May 2025 the French parliament voted to scrap the low-emission-zone scheme, but that has not become law and may not, so for now nothing has changed. Keep the sticker. If the national rule ever goes, individual cities can keep their zones by local decree anyway.

Milan runs two zones at once, which is why people get caught. Area C is the congestion charge over the historic centre inside the Cerchia dei Bastioni: EUR 7.50 a day, cameras at the gates, Monday to Friday 07:30 to 19:30. Area B is the low-emission zone that covers almost the whole city, no charge, but it bans the more polluting vehicles on the same weekday hours. Weekends and holidays both zones are open. So to drive into central Milan on a Tuesday you might be paying the Area C charge and needing to clear the Area B emissions rule in the same trip.

Our own habit for both cities is boring and it works: we park on the edge and take the metro. Milan's is quick and cheap, and Paris driving inside the ring is not a pleasure anyway. If you are staying inside a zone, check whether your accommodation can register your plate for access, because a hotel inside a ZTL usually can.

Check one database before you drive

The single most useful page for all of this is urbanaccessregulations.eu, the EU-backed database of urban access rules. It lists zones city by city, tells you which vehicles are affected, whether you need a sticker or online registration, and has a map and a route planner. We open it before every new city, because rules shift and a guide written last year is not a legal document. Use it to confirm the current figure and the exact zone boundary, then buy the sticker from the country's own official site.