VERTU Motors Group has injected £2m into a new assessment and preparation centre in Darlington.
The site, for its used vehicle operation, is also the UK headquarters for Vertu Vehicle Solutions.
It directly employs 19 people, with five more jobs created as a result of sub-contracted work.
The former Volvo trucks site was acquired by Vertu Motors and has undergone significant refurbishment.
The centre houses a mechanical workshop, re-spraying depot and onsite bodyshop, which has the capacity to service more than 300 cars per month
In addition to the vehicle refurbishment facility, Vertu Motors has added another training centre for its employees. Three centres already operate across the country, training staff in all areas of the Vertu Motors business.