When I bought my car from JD I had a decent experience. The problems started as soon as I drove off the lot. And of course since I had the warranty I kept going back to their service center to find out why my battery light kept coming on randomly and why the engine would not down on hills. I suggested the alternator, battery,fuel injection ect but I was told every time there's no problem. Had it at a private mechanic for about 20 min today to find out my battery and alternator need replace as well as about 3 quarts of excess engineer oil drained. Those "certified technicians" are certified ***