In the UK two cuts totalling 46 secs were made to secure a PG rating. One is of Lea Thompson pulling a condom out of Howard's wallet, the other is of the bad guy sticking his tongue in a car cigarette lighter socket to recharge himself. The scene with the condom was left intact on the film's television premiere on the BBC. Although the cuts were fully restored in 2008 for the 12-rated Metrodome release the same company reissued the film later in the year with a PG certificate, and this release lost 52 secs of cuts to photo shots in a sex magazine and a scene where Howard works in a sleazy sauna parlour.
West German theatrical version was cut to secure a "Not under 12" rating.
The USA TV version adds extra bubbles to hide the chest area of a female duck in a bathtub.