Buy alfa 156

Hello I hope this post hasn’t been there too often yet and I’m not annoying you So I urgently need a new car.. my first choice has fallen on a bmw but I can’t find a reasonable one I can afford. My second choice is the alfa 156 2.0 16v twin park bj 2000. What should I watch when buying? I found one of the ones near me and will look at it Monday..has 76t km down. However, it is semi-automatic and I don’t know yet once what this means now ^^ please thank you for many nice answers in advance 😛