I would not say T3 are cheaper to maintain. One of my buddies got a diesel westy and spend quite some money to have it reliable. I also own one, a Westy Joker high roof with a 1.9l DG engine and auto box. Some parts are becoming expensive. A complete stock exhaust for example. Rust is an issue as it starts in panels joints and goes everywhere from there. They drive OK, if you forget the 1.6 diesel and 1.6 aircooled. But, you have to drive them for what they are. Slow, old vans. I just put a 1.9l diesel T4 into service as a daily. It is OK for me as I live less than 1km from my work and use it to haul stuffs locally, but 100kmh on a highway is about all you can do, on a flat road, less when you have to climb anything or load it a bit. On the other hand, it is a very simple vehicle wich can go forever with minimal service costs, and driven correctly. T4 with TDI often are very high mileage. And parts can be expensive too. Injectors, turbo... I looked at a nice T5, 2009, 280.000km with the good 5cyl Tdi, very clean panel van, metallic gray,automatic gearbox for 10.000€. I asked my mechanic buddy and he told me not to buy it. Too expensif to maintain and at this mileage, everything need to be replaced sonner than later. I did look for parts price like dual mass flywheel, injectors (€€), turbo etc ... And he was right. Finally, to have something that drive well, easy to fix and not too costly to maintain, a T4 2.4d with the later head version, less prone to fail, or something without a VW badge on it that will cost 50% less to buy.