Most agencies are keeping their cars longer, much longer. I usually buy from the State Thruway Authority, since the car are used on the highway only. When I first started buying them, they were retired at 70-80K, now anything that runs can have upwards of 150K on it. I was in cab at Riverside a few years ago, the driver says everything was original (former LAPD car) and the car had 495,000 miles on it! The only good thing I can say about California when I was out there were the roads, they are absolutely beautiful, not a single pothole to be found. The two CVPI I have only have about 160K , and 140K on them. The main problem with car's from the North East is that they rust away, before their time. My Charger has 10K on it, since it stays in the garage most of the time.
BTW New York City doesn't allow used cop cars anymore, for about 10 years now, and just awarded the bid for the type of cab they want there. It was a Ford, but no more Crown Victoria's. I believe it came from some where overseas, possibly Asia, it looks like the newer cabs in England and Ireland.
