None.
I love my explorer. My parents bought it for me for my birthday. It is a very reliable vehicle. It is quick. It can keep up with a lot of cars. It is also good a off roaking. I plan on keeping my Explorer for a while. The only thing I don't like is how much gas it sucks up. It seems like it is empty the day after I fill it. But over all I love it. It's a nice sporty vehicle.
I own the same vehicle, and also submitted my own review. One thing I have to comment on though is fuel consumption. I don't know how many vehicles you have owned in your life-time, but I assume this is your first SUV as you stated your parents bought it for you. I conclude you are very young. Yes, gas mileage is not the greatest, but having owned a few SUV's and having lot's of friends with them I can tell you it is one of the better mid-sized SUV's for fuel consumption. I believe people have to realize they are not driving a small compact, therefore they are not going to get the best gas mileage. It is very good for a mid-sized SUV and with mine I almost get the same mileage out of a tank of gas as I did with my 1998 Lumina. I agree, it is a great vehicle - good luck and have fun!