Buy – or fingers off?

Hello, I am currently without a mobile kit, but I urgently need a vehicle (for about 1 year) that reliably brings me 70Km of easy distance over the highway to my workplace. A buddy borrowed a Phaeton (6cylinder) from his company and now I think about whether you can buy the good piece. The maintenance condition is “under all sow”, especially with the bright interior equipment this is of course bad, even the preparation at a specialized company helped only marginally. The car jerks when accelerating, not always, but more often. The control unit for the tire pressure control is probably defective, the front disc has a crack, but should still be taken over by the partial cascade, various pinned rust spots also has the good piece. Navi-DVD is missing. I once read out the fault memory and attached the relevant part. EZ is November 2004, mileage is about 265,000. What else can you spend for this? Thanks for reading and for tips Josef