Difficulty: Moderately Easy
Step1
Locate a dealer who sells former cop cars. Some dealers specialize in these, while others just happen to come across them by chance. This is your best bet for finding one in good condition.
Step2
Attend a car auction. Most cities will auction off their surplus equipment, including former cop cars, although you may need a dealer's license to purchase them. If so, talk to a dealer and tell them your interest. They may be able to accompany you to the auction and place bids for you.
Step3
Inspect any vehicle before you finalize a purchase. Check out the undercarriage to see how much damage it underwent (this is especially important in snowy areas). Bullet holes are common and should be patched to avoid rusting. Any modifications done to the interior, like holes drilled for installation of antennas, should also be taken care of.
Step4
Take it to an auto shop and have the engine thoroughly inspected by an experienced mechanic. The engines of cop cars do get worn out, but in many cases, they have been replaced several times before the car is retired. Thus the odometer reading doesn't matter so much.