I had purchased a car at Browns in Fairfax, Virginia and they promised me free oil changes for 3 years as part of the "extended warranty". Took it in for the first oil change 3 months later and whadda you know, they lost the paperwork and couldn't honor the oil change agreement.
My second beef with them is that a week after we purchased the car, we noticed the smell of burnt tires every time I got out of the car. I took it in to get serviced, but each time they said it was fine. Turned out to be the left rear wheel that was literally sticking to the pads. I had to pay $500 out-of-pocket for a non-dealer to diagnose and fix.
I have reported them to the BBB, but want to share these stories with you. DO NOT BUY A CAR AT BROWNS NISSAN IN FAIRFAX!!