The car that Johnny English used was an Aston Martin DB7 Vantage, which was actually Rowan Atkinson's own car.
The Johnny English character is based on a cowardly, incompetent spy played by Rowan Atkinson who first appeared in a series of television commercials for Barclaycard, with his assistant Bough (then played by Henry Naylor). The "poison dart pen" sequence is based on a scene in the commercials where Johnny shoots himself in the leg with the pen.
Rowan Atkinson later admitted that he was dissatisfied with the film, describing it as "five good jokes and a lot of longueurs."
Two of the screenwriters (Neal Purvis and Robert Wade) also worked on seven James Bond movies: The World Is Not Enough (1999), Die Another Day (2002), कसिनो रोयाल (2006), Quantum of Solace (2008), Skyfall (2012), Spectre (2015), and नो टाइम टू डाय (2021).
The first scene showing Johnny English in his office, just after the dream introductory sequence, Rowan Atkinson is wearing the classic "Mr. Bean" outfit.