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Last reviewed: 6 July 2026
V55/5 form · Box 48
Power / Weight Ratio (kW/kg)
What goes in box 48
Box 48 of the DVLA V55/5 form is for power / weight ratio (kw/kg).
Motorcycles and tricycles only. Take this from the Certificate of Conformity or the MSVA certificate, or get it from the vehicle manufacturer.
What to enter
| Field | Type | Required? | Shown when |
|---|---|---|---|
Power/Weight Ratio (kW/kg) Motorcycles and tricycles only. Take this from the Certificate of Conformity or the MSVA certificate, or get it from the vehicle manufacturer. | number | Optional | Conditional |
Conditional & edge cases
- Power/Weight Ratio (kW/kg) only appears on the form in certain situations (for example, when the keeper is a business, the vehicle is an HGV, or a specific fuel type is selected).Motorcycles and tricycles only. Take this from the Certificate of Conformity or the MSVA certificate, or get it from the vehicle manufacturer.
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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