Does anyone know about these cars? Opel Astras?  

Cheap and reliable car
i know it from a few friends that have an opel astra
but you should ask a few more..

I would advice you not to buy a Astra. From what i have heard, They are not much good a car, they efficiency is bad, they break down easily after a few years, comfort wise ii would rate them so-so. Overall, they will score a rating of 6/10 which is bad. Sorry, but i cant think of a better car of the same price tag right now.
P.S- i have driven a Opel Astra

Well, we've had opel astra before and we weren't that happy about it. Many problems. Every car brand has their own specialty and weakness. I suggested that you look around for all type of cars that fit your budget and find out both their weakness and specialty.

My family changed our car almost every year, not because of we are rich but simply because fixing it cost more than if we buy second hand car and we tried different kinda car (second hand) brand everytime. But for a long term, we are trying to save some money to buy a hybrid car (runs with benzine and electric too). Cost a lot but in the end it will definitely save a lot of money.

So, good luck and I hope you'll find the car that you like.

Maybe a Renault Clio or Megane would be better than both Opel and Fiat especially Fiat, where I live (muzembic or whatever LoL!)Reunault & Peugeot are the preferable coz relatively cheap & reliable but still german cars are the best, maybe a volkwagen, relatively cheap too ..