Nitrogen Oxide (NOx) Emissions

Since 1 January 2020, a NOx component is part of VRT for Category A vehicles (excluding pure electrics but including hybrids). You’ll need to provide a NOx figure at registration, or a default cap will apply.

Sources for NOx values

• New vehicles: Certificate of Conformity (CoC) — obtain from the seller or manufacturer. Upload the eCoC before your inspection.
• Used vehicles: Foreign Registration Certificate may include NOx (e.g., UK V5C, box V3 for older docs). If missing, contact a main dealer or manufacturer for the CoC.
• Japanese imports: Figures may be available from the Japanese Ministry of Land, Infrastructure, Transport and Tourism.

Revenue can accept official written confirmation of NOx from the manufacturer or a statutory authority. If no figure can be provided, a flat charge applies.