I bought my 99 lumina back in april and so far it has been great.
I use it as my work car and do about 60 miles a day on average.
I had a leak of coolant i smelled but couldnt find so i use some of that cooper dust stuff and it sealed it and i don't smell it anymore.
Great on gas, so far so good. it currently has 42k. I hope to get to 150k and i would have got my 4k out of it.