I purchased my SUV with 40000 miles. I now have about 72000 miles and have had nothing but good luck with it. Although the gas mileage is a little lower than I'd like, I bought an SUV, so I'm not going to complain. No problems with the power train, electronics, or anything else with the mechanics. The only problem has been with the front driver's seat comfort. A large person must have owned it prior to me and mashed out the seat, which I didn't notice until I sat for a longer drive.
Front seat comfort (for a larger man), Gas Mileage