The fair wear and tear guide is provided by the BVRLA and is the accepted standard that defines fair wear and tear when vehicles are returned to a BVRLA member at the end of a lease or finance agreement. The guides also provide advice for best practice in vehicle maintenance and upkeep that will prevent unacceptable wear and tear from occurring.
Below you can see the guides for both cars and commercial vehicles.
Car Fair Wear and Tear Guide
Commerical Vehicle Fair Wear and Tear Guide