Impreza 2.0 GX Combi LPG (Bj. 2003) – Weaknesses / purchase tips?

Hello together, Since my brother wants to look at a Subaru Impreza 2.0 GX Combi (EZ 11/2003) with LPG / maybe also buy, I searched the Internet a little bit for things to look for when buying such a model, or where its weaknesses lie. So far I could not find great what, which is already very positive, but rather I ask here again, if someone with an idea of the matter might have the one or another hint, on wo again to the vehicle: Subaru Impreza 2.0 GX Combi with LPG system EZ 11/2003 79,000 km 125 hp (92 kW) manual manual manual gearbox (I have attached an image to make it easier to distinguish which model it is, for me the shape of the headlights has helped me with my search / identification of the exact model well) Many thanks already for helpful answers. 🙂 Friendly greetings Stefan