Start with the maintenance records. Ask for documentation showing oil changes, brake work, and any major repairs. Most fleet vehicles have detailed service logs. Check the mileage and ask how the vehicle was used—patrol cars see harder use than detective or administrative vehicles. Inspect the exterior for body damage, especially around the bumpers and undercarriage where curb impacts are common. Look inside for wear on the seats, dashboard, and door panels. You’ll likely see holes or marks where equipment was mounted, which is normal. Check under the hood for leaks, especially around the oil cooler, which can develop seal issues on high-mileage units. Test drive the vehicle and pay attention to how the transmission shifts, how the brakes feel, and whether the engine runs smoothly. Listen for unusual noises from the suspension. If possible, bring a trusted mechanic to do a pre-purchase inspection. They can check for issues you might miss, especially with the brakes, suspension, and transmission, which take the most abuse on police vehicles.