How long does an HGV medical last?

An HGV medical (D4 medical) is normally valid for 4 months from the date the doctor signs the form. This means the D4 medical report must be submitted to DVLA within four months, otherwise, the form is considered out-of-date, and a new medical may be required.

Does the 4-month validity apply to the licence?

The 4-month validity applies to the medical report itself, not the driving licence. Once the DVLA approves the application or renewal, the licence is issued for a longer period, depending on the applicant and licence type. However, for the purpose of submitting your application, the medical certificate must be recent, and DVLA will not usually accept a D4 form that was completed more than four months earlier.

How does DVLA check whether the medical report is still valid?

During the appointment, the doctor records your medical assessment and signs the D4 form with the examination date. That date is what DVLA uses to determine whether the report is still valid. If there are delays in posting the application, or if drivers wait too long before submitting it, the form can expire even if nothing has changed medically. In those circumstances, DVLA may ask for a fresh medical before processing the application.

When should you book your HGV medical?

It is recommended to book your HGV medical close to the time you intend to submit your renewal or application, especially if you are applying for the first time or approaching a licence expiry date. This helps avoid situations where the medical expires while paperwork is still being processed.

How long does the HGV licence itself last?

Separately from the four-month validity of the D4 report, DVLA decides how long your HGV licence itself will run for. In most cases:

• drivers under 45 may hold a longer-term licence
• drivers aged 45–65 usually renew every five years
• drivers aged 65+ normally renew every year

Those renewal cycles do not change the fact that the medical certificate used for each application is only valid for four months.

Summary — how long an HGV medical remains valid

In summary — the HGV / Group 2 medical report does not remain valid indefinitely. The D4 form must be submitted to DVLA within four months of the examination date, otherwise the driver may need to complete a new medical before the application or renewal can be processed.