Swedish Environmental Zones (Miljözoner)
Swedish cities can designate environmental zones (miljözoner) where older, more polluting vehicles are restricted. Three classes exist:
- Klass 1 — restricts the heaviest-polluting older diesel lorries and buses
- Klass 2 — extends restrictions to older diesel passenger cars (typically pre-Euro 5)
- Klass 3 — effectively a zero-emission zone; only battery-electric and hydrogen vehicles are permitted
Signs at zone boundaries show the class number on a green background.
Euro Emission Standards
- Euro 6 (2014+) — current standard; very low NOx and particulate limits
- Euro 5 (2009–2014) — often the cut-off for Class 2 zones
- Euro 4 and older — may be restricted in Class 1 or 2 zones
Your vehicle’s Euro standard is in the registration document or on the Transportstyrelsen website.
Congestion Tax (Trängselskatt)
Stockholm and Gothenburg charge a congestion tax for most vehicles entering the inner city during peak hours. The tax is charged automatically via cameras reading number plates — no toll booths. Electric vehicles have historically been exempt; check current rules as exemptions change.
Electric and Hybrid Vehicles
- Battery electric vehicles (BEV) — zero tailpipe emissions; exempt from most zone restrictions
- Plug-in hybrids (PHEV) — may have restricted access to Class 3 zones when running on petrol
- Mild hybrids — generally treated as conventional vehicles for zone purposes
Key Takeaways
- Three miljözon classes — Class 3 = zero emission vehicles only
- Your Euro standard determines zone access rights
- Congestion tax applies automatically in Stockholm and Gothenburg
- Violating an environmental zone restriction results in a traffic fine