CarPrep was started in 1975 by John Drew (MIMI). The company was formed as a result of John's extensive diesel knowledge gained from childhood through working along side his father who operated a fleet of diesel vehicles.

In 1985 John was approached by a company who were having problems with their diesel Citroen BX's. Consequently this started the heavy involvement with Citroen and has now seen CarPrep recognised to be one of the very best Citreon specialist in the South East of England. John's brother David, joined CarPrep around this time and since then the company has gone from strength to strength.