My 2008 roadster (w/ 19,500 miles on it) was wondering all over the road when going over bumps and ruts. I replaced the steering stabilizer last week and now it drives like new. Since your XF has few miles on it, I suggest you try that first before dropping a lot of cash into it. I had mine replaced under warranty at the dealership; otherwise, I would have done it myself. Had it not been replaced under warranty, the dealership would have wanted $650 plus tax.