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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.
Related V55/5 help answers
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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