I love this show. Actually, I love these kinds of shows. From where I’m from, at least, this is shown on Discovery Turbo, and in all honesty, I can watch that channel for 24 hours straight.
The show features cool bass-centered electronic music for its scores. As for the opening theme, as far as I’m concerned, I can call out two unique versions.
The first version, which was of course used in the first few seasons, is credited to Roger Dexter and Dominic Mangle. This opening theme also made it to the closing credits. Watch the video below to hear the theme during the opening titles.
As for the second version, I do not know for sure when they started using it but I can confidently say that it has been around since their On the Road special which was in series 5. The second theme is credited to Plan 8 Music (or Plan8), a music and sound production suite from Stockholm. See below.
By the way, did you know that almost all Wheeler Dealer episodes are on YouTube? Check it out to find out if you missed something—here’s their episode list.