Belgium's LEZ Trap — Two Separate Systems, One €350 Fine

Belgium is where careful, law-abiding drivers still get fined — not because the rules are harsh, but because there are two low-emission-zone systems that don’t talk to each other. Brussels runs its own; Antwerp and Ghent sit under a separate Flanders system. Register with one and you’re still unregistered — and fineable — in the other. Foreign-plated cars must register before entering, and the penalty is €150 to €350, camera-enforced.

The two systems — and why that’s the trap

Belgium’s LEZ enforcement is split by region:

• Brussels-Capital — register at lez.brussels before you drive in.
• Flanders (Antwerp and Ghent) — register at lez.vlaanderen.be.

There is no shared database. A driver who registered for Antwerp and then drives into Brussels a day later is treated as unregistered in Brussels and can be fined. This single fact is the most common way foreign visitors get caught.

Brussels — Euro 6 diesel from 2026

From 1 January 2026, Brussels tightened its rule: diesel cars must be Euro 6 (Euro 5 is no longer allowed) and petrol cars at least Euro 3. Fines for non-compliant vehicles begin from 1 July 2026, set at €350 — the price of the annual pass the city introduced. Electric and hydrogen cars are exempt but foreign vehicles still register once (free) at lez.brussels. Full details on our Brussels LEZ page.

Antwerp & Ghent — Flanders rules and the €35 day pass

In Flanders the minimum is Euro 5 diesel / Euro 2 petrol. Registration at lez.vlaanderen.be is free for compliant vehicles. If your car doesn’t qualify, a €35 day pass lets you enter — but only a maximum of 8 times per year. Drive in unregistered or non-compliant and the fine is €150–350. See the Antwerp and Ghent pages for zone boundaries and hours.

Wallonia (Liège, Charleroi) — planned, check before you rely on it

Wallonia has repeatedly announced and postponed its own low-emission zones for cities like Liège and Charleroi. Treat these as planned rather than firmly in force and confirm the current status on the regional site before travelling — the timetable has moved more than once.

How to avoid the fine

1. Check your car’s Euro class first — it’s on your registration document, or use our checker.
2. Register in both systems if your route crosses regions — lez.brussels and lez.vlaanderen.be. It’s free and takes minutes.
3. Planning a wider trip? Plan My Drive shows every country’s emission, vignette and winter-tyre rules for your exact car in one place.

Sources: City of Brussels — LEZ · lez.brussels · lez.vlaanderen.be. Rules change — confirm on the official sites before travelling.