How often do I need a D4 medical?
The frequency of your D4 medical depends primarily on your age and your Group 2 licence renewal cycle. You need a D4 medical when first applying for a Group 2 licence and then at set renewal intervals to ensure the DVLA has up-to-date medical information before renewing your entitlement.
Standard D4 medical renewal schedule
| Driver Stage / Age Range | Renewal Frequency |
|---|---|
| First Group 2 licence application | D4 medical required at initial application |
| Age 45 | Renewal at 45 |
| Ages 45 to 65 | Renewal every 5 years |
| Age 65 and above | Annual renewal (every year) |
The DVLA increases the renewal frequency with age to reassess medical conditions that may change over time. This helps ensure your continued fitness to drive and maintain road safety.
When the DVLA may request a D4 medical sooner
You may need a D4 medical sooner than your scheduled renewal if:
- A medical condition is declared
- An existing condition changes
- Further medical clarification is needed
- A previous assessment is under review
In these situations, the DVLA will determine the assessment frequency based on the specific risks associated with your medical situation, rather than solely on your age.
How Long Is a D4 Medical Valid?
A completed D4 medical form is normally valid for up to 4 months from the date the doctor signs it. Your application must reach the DVLA within these 4 months; otherwise, the form may expire, and a new medical may be required.
This validity rule ensures the DVLA is assessing your current medical information, which is crucial for maintaining an accurate record and ensuring your continued fitness to drive.
It is usually best to book your D4 medical within 4 months of your renewal period. This ensures the form remains valid when your application is submitted to the DVLA.
For full renewal rules and application guidance, see our guide: D4 medical renewal and DVLA licensing rules.