John Firbank, a technician at the Leeds Road site, was runner-up in the Seat Technician of the Year award. The accolades were awarded at a gala dinner at the National Maritime Museum in London.
Warne originally joined Nidd Vale in April 2004 as business manager before being appointed sales manager of the new Seat franchise in February 2005.
Firbank, who joined Nidd Vale in 2005, has 22 years experience as a motor engineer. He has both Vauxhall Gold standard and Seat Mastertech qualifications.
Colin Hainstock, Nidd Vale chairman and chief executive, said: “Warne and Firbank thoroughly deserve this recognition. They have both demonstrated their total commitment to making the Seat franchise in Harrogate a resounding success.”