I took my car for a simple repair, I paid out an arm and leg for the service and not even one month later I was returning with the same problem. They did the second repair free because of the guaranteed work they provide. It was about one week after this repair and I began having the exact same problem so I took the car to a dealership to have them see what the exact cause was, turns out that this shop installed the wrong parts... I will NEVER use Northwest again because of the insane prices and cheap, short-cutted work that they do. If you do not know about cars these people will blow plenty of smoke to make them seem like a good place to go, what a great scam they have going.