Probably safety, changing customer trends, and emissions. Crown Vic was based on a platform that had been used since the early 70s if I recall correctly, and th

Probably safety, changing customer trends, and emissions. Crown Vic was based on a platform that had been used since the early 70s if I recall correctly, and the engine (4.6L V8) was being phased out in favor of the new 5.0 V8. That being said, it definitely wasn't profitability. Tooling for the platform had been paid off for literally a decade at least (probably more) by the time production stopped.