The Retail Automotive Alliance has signed a renewed contract with Experian for vehicle data checks.
It won a tender process under which the RAA considered products from rival provenance check companies.
The three year contract with the RAA's 22 dealer group members represents an expected stock turn of 103,000 vehicles.
Experian was first appointed as the RAA's supplier of provenance services in 2007.
Marc Matthew, the RAA chairman and also chairman of the Lifestyle Europe dealer group, said: “We have enjoyed an excellent working relationship with Experian over the last two years, and our review of other provenance services showed that Experian’s continues to be the best choice in the marketplace. So much so, all of our members were unanimous in the decision to continue our relationship with Experian.”