Can be a mod or something that comes with the game. I just want to hear everyone's opinion and maybe even find some really sweet cop cars. My favorite so far is probably this Ford Explorer I found on a YouTuber's website. It looks really good in the night. Here's a screenshot.
If you add the police livery to the Cherrier rally car it makes a pretty good one. Only problem is the low top speed, but that can be fixed with some gearing adjustments I think
Gavril Grand Marshal. Doesn't do TOO well on corners but I can keep up with a ETK-I series reasonably well in it on the Portino road on Italy. But the most phenomenal, believe it or not, is the Chevy Caprice. I have no idea how but it handles incredibly.
My custom police version of Ibishu Pessima is cool. It was my default vehicle for a few days until I accidentally found Ford Mustang mod. With: Powerful 2.0L engine 7500 RPM rev limiter Sport intake 6-speed sequential transmission Quick ratio race steering Race front and rear brakes Semi race front and rear brake pads Viscous AWD transfer case Welded front and rear differential AND Beautiful wheels (unlike other police cars) Top speed: 198 km/h 0 - 100 km/h: 5~6 seconds Pic: P.S: I know it's not a modded vehicle but it can act better than lots of mods