The car that Jim Bergerac drove was a 1947 Triumph Roadster. It was very temperamental and caused immense problems during filming when it refused to start - or to stop if the brakes failed! The engine sounded so rough that the sound of a Jaguar was dubbed over the top. John Nettles loathed it because he kept scraping his knuckles or banging his knees on the dashboard. After filming on Bergerac had finished, by which time the car was in very poor condition due to its extensive usage, it was auctioned for £34,000 as part of the Children in Need appeal; the new owner later wrote an angry letter to John Nettles complaining about the state of the car.
In The Cult of...: Bergerac (2008), Louise Jameson (Susan Young) described what a perfect gentleman John Nettles (Jim Bergerac) was. They had to do a love scene in bed in which the camera started at their entwined feet and tracked up over the duvet to their faces as they shared some pillow talk. During rehearsals, John's trouser legs could be seen at the bottom of the duvet, so he offered to roll them up. Louise said she didn't mind if he took them off altogether, but he replied "If I get excited, I'm embarrassed. If I don't, you're insulted. So let's just keep it a secret."
The location used as Bergerac's rustic barn-conversion house in Series 1-3 was later submerged when the States of Jersey flooded the valley to create the Queen's Valley reservoir in 1991. Plans for the construction of the reservoir were referred to in Bergerac: The Last Interview (1985), with Jim first meeting Susan in her job as an estate agent to find him a new home.
When Trevor Eve decided to move from TV back to the theatre after doing two series of Shoestring (1979), its creator, Robert Banks Stewart, was left with lots of leftover ideas, so he developed a new series about another rehabilitating detective, this time based in Jersey, which explains the similarities between Bergerac and Shoestring.
(March 2008) The former children's home at Haut de la Garenne, used as the filming location for the Bureau des Etrangers where Bergerac worked, was at the centre of a police investigation amid allegations of child abuse at the home.