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Last reviewed: 6 July 2026
V55/5 form · Box 43
HC — Hydrocarbons (g/km or g/kWh)
What goes in box 43
Box 43 of the DVLA V55/5 form is for hc — hydrocarbons (g/km or g/kwh).
The hydrocarbons figure from the Certificate of Conformity, or it may be on the IVA or GB conversion certificate. On EU registration certificates it's field V.2. Leave blank if you don't have this information.
What to enter
| Field | Type | Required? |
|---|---|---|
HC (g/km or g/kWh) The hydrocarbons figure from the Certificate of Conformity, or it may be on the IVA or GB conversion certificate. On EU registration certificates it's field V.2. Leave blank if you don't have this information. | number | Optional |
Source
This page is generated from the same field definitions our V55/5 tool validates against, mapped to the official DVLA guidance.
V355/5 official guidance (GOV.UK)v55-5.com is an independent service and is not affiliated with the DVLA.
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