Hi, I have bought a 2001 X5. It is silver with a black interior. I have had several BMW's in the past and my children and husband all drive BMW's but this is the first X5. It is a 3.0 with 169,000 miles. What would you recommend that I check first? I really am very happy with it. My son went with me to purchase it and he didn't want to give it back to me. His car is the 335i across from my car in the picture.