Better Fleet: What works when grey fleet compliance is taken seriously

March 9, 2026

Organisations that manage grey fleet effectively tend to follow the same principle: treat grey fleet as part of the fleet, not an exception to it.

That starts with clear internal expectations. Leo Taylor adds:

“Many grey fleet drivers do not see themselves as professional drivers. They are simply using their own car to attend meetings or visit sites. But the risks they face are no different to those driving a company vehicle.”

1. Clear policy frameworks

A structured driving-for-work policy should cover personal vehicles as well as company vehicles. This sets out the standards employees must meet before using their own car for work. Typically this includes confirmation of a driving licence, MOT and roadworthiness, insurance and more.

Without a formal policy, these checks are often left to individual managers or assumed rather than verified.

2. Regular compliance checks

Many organisations still rely on manual document checks or one-off verification when someone joins the business. That approach quickly becomes outdated as licences, insurance policies and MOT certificates expire.

More organisations are moving towards automated licence validation and scheduled compliance checks, supported by digital platforms that flag upcoming renewals or missing documents.

This reduces the administrative burden and ensures records remain current.

3. Reliable mileage data

Grey fleet often operates on reimbursement systems based on mileage claims. When journeys are recorded manually, errors and inconsistencies are common.

Automated mileage capture platforms have become increasingly popular because they create an accurate record of business travel, simplify expense management and provide audit-ready data if HMRC requests evidence.

Better visibility of mileage also helps organisations understand how much grey fleet activity actually takes place across the business.

4. Driver support and training

Occasional business drivers often receive little structured support. Yet they may still be covering long distances or transporting equipment for work.

Driver training, telematics insights and regular check-ins can help organisations maintain consistent driving standards across both company vehicle drivers and those using their own cars.

TTC’s research suggests driver training is still patchy, with only 51% of businesses investing in training for grey fleet and company car drivers who use their vehicle for work journeys. Nicholas Lyles, Director of Policy and Standards at IAM RoadSmart, argues that regular training and telematics-supported monitoring can help build a safer driving culture for drivers who otherwise sit outside formal fleet processes.

In the final article we set out a practical playbook with tools, resources and providers that can help organisations manage grey fleet more effectively.

Read guidance in this series:

Why grey fleet compliance is still a blind spot for many organisations

A practical playbook for reducing grey fleet risk

Or join Better Fleet for best-practice planning that's proven through real-world case studies: Better Fleet Campaign