They do NOT cost more to buy... but there's a higher (inflation) percentage cost to buy a used car vs new, when compared to last year. Example: New car cost $25K x 13.2% (higher due to inflation) = $3,300 more than last year ($28,300). Used car cost $15K x 27.7% (higher due to inflation) = $4,155 more than last year ($19,155). However, if comparing a new car and a used car that cost THE SAME (ex: 25K), then YES, the used car would cost more due to the inflation percentage being higher.