ULEZ & CAZ Guide for Fleet Vans (UK)

This guide explains how Ultra Low Emission Zones (ULEZ) and Clean Air Zones (CAZ) affect vans up to 3.5t and larger trucks, what emission standards mean, charges and exemptions, and key decision points for fleet buyers and operators. Our clear, fleet-focused ULEZ & CAZ Guide for Vans in the UK, especially useful if you’re managing a commercial fleet and want to understand how emission zones will impact operating costs, compliance, and vehicle specification choices.

What Are ULEZ & CAZ?

ULEZ - Ultra Low Emission Zone (London)

• Operates 24/7, every day except 25 Dec across all London boroughs.
• A pollution-based surcharge applies to vehicles that don’t meet specified emission standards.
• Applicable primarily to cars, vans (≤ 3.5 t), motorcycles and specialist vehicles.

CAZ - Clean Air Zone (Other UK Cities)

• A similar concept outside London in cities such as Birmingham, Bristol, Bath, Bradford, Portsmouth, Sheffield, and Tyneside.
• Defined by classes (A–D) that determine which vehicle types and emission standards are charged.
• Fleet vans are typically subject to CAZ Class C or D requirements.  

Emission Standards Explained (Euro)

Understanding the “Euro” emission standards is key:

Note: Euro 6 diesel typically applies to vehicles registered from around September 2015 onwards; petrol Euro 4 generally aligns with vehicles registered from January 2006.

Daily Charges & Penalties

ULEZ (London)

• Daily charge: £12.50 for non-compliant cars, vans, motorcycles and specialist vehicles (≤ 3.5 t).
• Penalty for non-payment: Typically a fine (e.g., £160, reduced to £80 if paid promptly).
• Vans > 3.5 t are handled under the Low Emission Zone (LEZ) rules - often with higher charges and stricter standards.

CAZ (Other Cities)

• Charges vary by city and class - but vans in Class C or D zones commonly pay a daily fee (e.g., £8–£12.50).
• Penalties for non-payment differ by authority - always check local signage and online info.

How This Affects Your Fleet

1. Compliance Requirements

• For most urban zones (ULEZ & CAZ), ensure your diesel vans meet Euro 6 and petrol vans meet Euro 4 before entering.
• Electric vans are typically compliant by default.

Newer Mercedes-Benz vans - especially recent diesel models - are usually Euro 6 compliant out of the factory, making them eligible to enter ULEZ without daily charges.  

2. Operations in London

• If your fleet regularly enters Greater London, ULEZ is a major cost factor - non-compliant vans can incur a charge of £12.50 per vehicle per day (or more if LEZ also applies).
• For vans > 3.5 t, the LEZ standard is Euro VI, and charging/penalty scales differ.

3. CAZ - Other UK Cities

• CAZ schemes outside London also charge if your vans are non-compliant - and rules vary by locality (always check the current local CAZ standard).
• Some CAZ boundaries or class schedules are stricter (e.g., Class D applies to cars, vans, HGVs, buses).

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Checklist for Fleet Buyers & Operators

Before purchasing or deploying vans:

Emissions & Specs

> Confirm Euro emission standard via the DVLA or official checker.

> Prefer Euro 6 diesel or electric vans for urban fleets - this avoids most daily charges.

> Document each van’s compliance status for operational planning.

Route & Zone Planning

> Map routes with likely entry into ULEZ or CAZ zones (especially London or the city where you operate).

> Budget for daily charges if older, non-compliant vehicles can’t be replaced.

Exemptions & Support

> London has limited exemptions for certain vehicle types (e.g., certain non-profits or specialist vehicles with applications).

> For CAZ schemes, check local authority guidance - some offer transitional arrangements or grants for cleaner vans.

Final Summary

Always use the official vehicle compliance checkers (TfL for ULEZ and your local council/CAZ checker) before planning routes or buying vehicles.

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