Tadek
If you are after a seven seater then getting what a DJ offers for the same price elsewhere will be a huge push.
Mine has the BWD motor and it is loud as a mower but you get used to it. It is not as fuel efficient as I had expected a 2.0l diesel engine to be but then again it's a heavy car for the small engine and I mostly do short runs on a cold engine. I get 25MPG urban and 30ish on the motorway.
Specialist parts are b1tch to get here in the UK and non-maintaince repairs will cost you an arm and a leg. I lucked out as the trader I bought it from gave me a 6 month warranty and in the first month had to shell out £3.3k in repairs (reconditioned turbo and a set of clutches) so I didn't have to.
Having said all that I freaking love my Dodge, the room it offers, the DVD in the rear, the built in sat bav, rear parking cam and my Infiniti audio system. I bought it for £8.5k with 45k miles on the clock. Would've had to spend £2k more on similar spec elsewhere - at least that.
So all in all, get one with warranty and you should be fine:)