Grey fleet is the use of an employee's private vehicle for business travel.
Almost half of employees who use their private car for business-related journeys do not recall having had their driving licence checked by their employer.
Almost half of the employers offering car allowances do not know how the money is being spent, raising concerns over the condition of grey fleet vehicles.
Mercia Fleet Management is offering small businesses of up to 100 employees free grey fleet management for six months to help them cut their fleet risk.