The ad appeared on a poster site beside the A532 road and featured text stating: “The A532. It’s miles more fun in a Mini”.
Mini owner BMW said the use of the coloured lines referred to the distance that could be driven by the car, while the word “fun” referenced Mini’s brand values and how it felt to drive one of its Minis.
The Advertising Standards Authority (ASA) said the large number of lines in different colours would give those who saw the ad the impression of a fast-moving vehicle – an impression exaggerated by the wide format of the poster.
The regulator also said the use of the word “fun” in conjunction with the imagery of a vehicle moving at “excessive speed” in a built-up environment was likely to encourage dangerous driving and ruled the ad was “irresponsible”.