you can't touch a deux chevaux here in the states for what you can get into an old mopar a-body or rambler 6-cylinder sedan for.
nor can you touch a 90-series saab.
i can't speak for that cool, crazy little DAF 33 bas posted, because they never came to the USA. cool little ride, though.
i'm talking about 40-50 year old cars you can still get for cheap in whatever country you reside in. citroëns and saabs from the '60's are definitely not moped-type cars (in that they aren't cheap to obtain) here in the USA.
i do believe that some of you missed the point of what a moped-type car is, and are posting wayward oddities, such as euro and soviet cars that never actually made it to the states (or whichever country you reside in) in high numbers, and are cheap to obtain today.
go find a 2CV, a saab 92, or a lada here in the states. good luck getting one on the cheap. (edited)