The Dodge Neon - IMO and based on zero scientific fact - is the absolute most unreliable car that was produced at such high volumes in the last 10 years. I'm sure someone will quote a car that lasted a year or two because of massive defects or something, but the Neon is absolutely horrible and still managed to sell like mad. I personally know 6 people that have owned Neons, and all were sold for whatever they could get for them before 100k miles because of the amount of problems they had - and these are just my close friends. The sad part is, it wasn't the same problem. One family I know, 3 daughters, very similar, youngest is 2 years younger than the oldest, all were bought new when the girls were 16. They're all very nice, quiet girls, took good care of them (I know them well), and drove reasonably. The longest-lasting one made it to around 95k before the transmission and a/c went bad at the same time. The other two, combined, had a blown head gasket, leaking power steering rack (had to be replaced or refilled constantly), alternator died, electrical problems... literally, between the three Neons, there were only a few parts that didn't go bad on at least one of the cars.
You did get a good deal, but I hate those cars with a passion. Best of luck.