Hands-down my 95 CVPI has been the most reliable rock-solid transportation that I've ever owned, and this ain't my first vehicle. 126K miles so far. I love this car.
A CVPI is a factory equipped police interceptor. Yup - a cop car. You can't buy them new, but you can buy them used and I think that these are an often overlooked bargain. And you do not have to buy them with lights and sirens. Get one in decent shape (take-home or admin car) and it can see 200K miles no problem.
I bought mine - fully loaded - with 69K miles on it about 2 1/2 years ago for $3500 plus $300 to ship it from Kansas to the Houston area. Car was bought from
www.kcpolicecars.com and they were excellent to deal with. My next one will come from them as well, but my 95 still runs like new so dunno when that will actually be. Mileage is anywhere from 21-26mpg depending on city/hiway, etc.
The CVPI's are equipped with a recalibrated PROM for higher idle speed and shift points but the 4.6 modular engines are the same for standard and PI versions, no matter what anyone may tell you. Frame is reinforced, oil cooler, additional power feeds, heavy duty shocks, silicone coolant hoses, 160 amp alternator, dual exhaust w/crossover, front/rear sway bars, different steering box/ratio, and stiffer rate springs are some of the PI factory equipment. Ride is good, no mush, but not too stiff either. I think all versions have the 4 wheel disc brakes, but for sure the PI versions do.
Maintenance is always high on my list. But most of the maintenance on these cars is very similar to what you need to do on anything else - things like changing fluids, brake pads, etc. Some additional things in particular are cleaning the EGR passages (they tend to get carbon buildup), and it is not uncommon for the DPTE (I think the abbreviation is right?) sensor to need replacement - $45 part. If you get an EGR flow trouble code, most times its this sensor not the valve. Also the later (than 95) models had plastic intakes that were prone to cracking.
Do some research at kcpolicecars, also forums at
www.crownvic.us and
www.crownvic.net and you will see that for the most part, owners have been very happy with these cars. I know that for me, my cost to own has been very economical and as I mentioned I would get another one without hesitation. No way would I get a new one though, much prefer a used PI version.
Hope that helps - of course most folks like what they drive, so there's all kinds of vehicles/opinions, but you asked about CV's in particular. Just be sure to buy from someone reliable so you don't get one that was featured on Wildest Police Videos ....