[QUOTE=FoieGrasIsEvil]
Police agencies get a pretty good deal on those cars due to volume purchases, IIRC. Police Interceptor Crown Vics aren’t exactly slow, but they aren’t going to keep up with a sports car all that well, either, BUT…you can’t outrun the radio.
I think that the space/storage consideration for police is a real issue here. Cops carry all kinds of stuff in their trunks, so they need a good sized trunk, and cops also make a lot of arrests with their everyday cruisers, so they need a back seat large enough for that, as well as four doors.
They do handle crappy, but their solid rear axle makes for a very predictable reaction from the car under duress, so they are easy to train in for pursuits.
I’m sure they can get a better car than what they have though, just for MPG’s sake. My 1996 Crown Vic I used to own got about 18MPG.
EDIT: Also, wouldn’t having to call for a prisoner transport vehicle negate the savings in gas for having to use two vehicles to report to the scene of a crime, particularly if it’s just to arrest a single individual which the Crown Vic is equipped to do already?
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Also, don’t forget that certain jurisdictions in the U.S. have to deal with large, rural swaths of land, which most law enforcement agencies in Europe don’t have to deal with (so far the discussion has only focused on urban areas).
Take the Iowa state patrol for example. Each of their police cruisers has to be effectively self sufficient when out patrolling the interstates and state roads, dealing in everything from speeding tickets to accident response to domestic disturbances, breakdowns, etc. Those cruisers are packed with gear. And when they receive an emergency call for a location about 30-50 miles away, they will gun it and I’ve seen them doing upwards of 90 mph on I-80 to respond to a call. A compact diesel powered vehicle just wouldn’t be able to meet their needs, unless they completely restructured the way they handle their operations (cooperative teams of different cars for each role, etc).