I used this service for my bmw 740 I. The cost for repair at the repair shops was several hundred more than what this service charged. Most repair shops want to sell you the entire window mechanism when all that is needed is a new track or something very simple to repair. PWR came in and fix the problem at my job. That's all good however what struck me was the customer service I recieved when I called. I highly recommend giving this service your business. Your windows will be fix and your wallet will thank you.. Good business model thanks PWR!