My daughter absolutely LOVES this toy! After doing some research before purchasing a Power Wheels toy, we learned that alot of them don't do well on the grass. Not this one! It runs over the little hills and "rocky terrain" in our backyard with no problem at all! We also liked the fact that you can "lock out" the fast speed and reverse... it goes 2.5 mph and 5 mph. We are VERY happy with this purchase... especially our daughter! I couldn't believe how well it handles in the yard! We HIGHLY recommend this Power Wheels "vehicle".