Market overview: Which Hyundai models are currently the most popular on the used car market? AutoUncle has analysed 85 used Hyundai cars that are currently for sale at 43 dealerships. The three most popular Hyundai models as used cars are: i10, i30, i20. Prices start at around £1,195, and the average price for a Hyundai on today’s used car market is £2,587.