The team, which includes Preston cricketer Andrew Flintoff, have tackled Borneo jungles and protested laws decreed in Brunei for the show.
McGuinness, Flintoff and Chris Harris decided to decorate their cars after learning of the new legislation in Brunei.
McGuinness suffers an engine failure on a mud track in the upcoming episode of the series, which the team have decided to air despite controversy surrounding Brunei.
In the new episode, McGuinness says he has "had an accident" following a panicked downhill drive through the jungle, without any power in his engine and problems with his gear stick.
A new photo has been released of the Top Gear team proudly standing around their rainbow coloured cars, which will also feature in the series.
The team had initially tried to include them in the car collection of the Sultan Of Brunei, who was the centre of a series of protest over repressive legislation which would have seen homosexuals stoned to death.
Top Gear airs on BBC Two on Sunday at 8pm.
Flintoff, who played for Lancashire during his domestic career, recently took on the role as an ambassador for the Red Rose county.