 For Sweden and certain other markets a version with a 771 cc engine was developed for the 1976 model year, as new very strict emissions regulations were introduced but did not apply to engines of less than .The Swedish model was discontinued after 1977, as sales of the underpowered car were sluggish, but the HE engine option continued to be mentioned in period journals (also for the Derby) until the Mark I was replaced in 1981.The Mark 1 Polo and Derby were facelifted in 1979 (unofficially referred to as the Mark 1F) with plastic bumpers, a different front grille and a revised dashboard.