The "cop car", as my friends call it, has had only one minor repair (idle air control valve $200) in the nine years I've owned it (original owner; 84k miles as of 10/2008), excluding basic maintenance, tires, batteries, and fluids. Not the best car I've owned (that honor goes to my 77 Pont Bonneville, bought used), but I'd buy it, again, if I could (Ford no longer makes it available to the public, although its upscale, sister car, the Mercury Grand Marquis is similar).
Strong, durable, easy to drive; speeders slow down because they think I'm a cop, then drive off faster than before as they pass angrily by for my having slowed them down (maybe I did them a favor!). Even cops wave when we pass each other, so I just wave back!
Half the dashboard lights don't work anymore (I run the exterior lights when I'm driving, so I presume they burned out, but that's never happened with any other car I've had); the cruise control buttons don't work well.