Deficiencies 2011 V70

Last Friday I bought a used V70 (D5 Momentum, EZ 06/2011, 160.000 km, 232 hp / 171 kW Heico, TÜV until 09.2017) with warranty and 1 year warranty. I have noticed 3 things negatively up to now: 1. If I drive straight ahead, the steering wheel is wrong. Not much, but it bothers me. If I let go of the steering wheel briefly, the car drives straight ahead and does not pull over to one side. I suspect that the steering wheel has already been dismantled and not just mounted. The dealer knows nothing about it. 2. The driver’s side door handle is poorly open, even when compared to the other door handles. Is it done here with a bit of silicone spray, as the dealer suggests? 3. The crossbar shakes at full impact. After 162,000 km probably not unusual. How high are the costs here and on what should be do I respect? Best regards