it's a big problem. i had mine go at 2700 miles then at 20000 miles then the low pressure sensor went at 30000 miles and two days later the same problem going to the shop on monday. i drive a lot and live in rural vermont last thing i need is to be stuck late at night in no-where land. hard to believe you pay 50k for a car and worry when you go out of town with it . who cares if the will stand behind it for 10/150 when your car is dead on the side of the road? p.s. i have only used shell 93!