Not sure if you meant just some of the newer models but here is my list:
1985 Stellar - bought new in July 1985, only oil changes/regular maintenance ever required on it over a 5 year period. Racked up almost 110,000km on it before I traded it in on a 1990 Sonata.
1990 Sonata - bought new in July 1990. Rad replaced under a recall during the first year. Only normal maintenance costs required (oil, exhaust, brakes). Sold it in 1999 when I bought a new truck. Racked up almost
147,000km on the Sonata.
1991 Scoupe - bought new for my wife in Aug. 1991. Replaced a power steering hose in 2002. Replaced gas tank in 2004. My wife got a 2006 Kia Sportage to replace the Scoupe for her driving needs (got the Sportage since my wife wanted to stay with a manual transmission and 4 wheel drive and the Tucson didn't offer that but the Sportage did even though they are basically the same vechicle) and the Scoupe was passed down to my two sons. My youngest son smacked in the front end of the Scoupe this past Feb. so it is now a door-stop with almost 174,000km on it.
1995 Scoupe - bought this used with 142,000km currently on it. From past records only clutch work was required a couple of years ago. Otherwise in great condition.
Anyway, that is my experience with Hyundai products. Other than just a couple of things the only money I ever had to throw at them was for the usual oil, exhaust, brakes, etc. type of stuff which is to be expected.
Cheers, Lawrence