Audio problem: When Sarge is giving instructions to Allbright over the taxi radio Allbright replies "I don't know what the union's going to say about all this" to which Sarge replies "**** the union". His mouth doesn't open while the noise sounds to cover up his swear word.
Audio problem: When the robber driving the hijacked taxi turns on to the grass, when he realises he is surrounded by the speedy cabs the tyres squeal, even though he is driving on an unmade road.
Visible crew/equipment: When the speedy cabs close in on the hijacked taxi the camera crew is reflected in the side of the taxi nearest the camera.
Visible crew/equipment: When the two policemen drive off after receiving the radio message to look for the stolen taxi the camera crew is reflected in the police car windows.
Factual error: When the fleet of Glamcab Ford Cortinas drive out of their yard on the first day of business, some of the Cortinas are two door models, which wouldn't be legal for use as a taxi.
Plot hole: Early in the film as Smiley is opening the yard gate to get his taxi out, the scene then cuts to Pintpot on his motor scooter approaching the gates, another taxi passes Pintpot having just come out of the yard, how did this taxi get out of the yard while the gate was shut?
Revealing mistake: In the scene where the villains hijack the glam cab you can see people standing around watching the filming.
Other mistake: Some of the Ford Cortinas are 2 door models which would be useless as a taxi.
Continuity mistake: When we first see pintpot driving the taxi (just before he nearly runs over the man) in the shots from inside the taxi they are driving along a tree lined road, but in the exterior shots they are driving along a road with houses on both sides.
Factual error: Pint-pot with a hole in the taxi's sump - why is he underneath the taxi at the back having a look when the sump is at the front under the engine?