You need to also realize that government agencies buy vehicles on a "low-bid" basis. Have you ever been in the front of a police car? We have so many electronic items in ours at work that a person cannot even sit in the passenger seat. DVR, AVL, CB Radio, light bar controls, police band radio, laptop, plus a shotgun/AR15.
Yeah, I agree that the Crown Victorias and Impalas are turds when it comes to cars. I do not see it feasible to put a turbo, AWD, MT car in a police lineup. They would be in the garage every week for smoked clutches and broken gears.