I am about to potentially purchase an A4 04 2.5tdi se multitronic 64k on the clock it was my late relatives and has been sitting in locked garage for 4 years and only started 3 times in that period, i have put a new battery on it and it started after 4 turns and seems to drive ok, gearbox smooth, and brakes seem ok, it had a cambelt change at 62k along with water pump so apart from an oil change and general service requirements should i look for any specific things, once it was warm i did give it quite a good rev when idling and it sounded a little rattly at high revs and madr a sort of whooshing noise which sounded a like it was perhaps coming from the air filter hose, anyway its £2k a good buy? Or walk away? Any advice would be appreciated many thanks