The 2006 — 2011
Police Interceptors are
equipped standard with an open 3.27:1 rear axle (Axle code Z5), with a trac loc 3.27:1 rear axle (Axle Code X5) optional, and are electronically limited to 140 mph (225 km / h) due to critical driveline speed limitations (The weight of the vehicle with law - enforcement equipment on - board makes it highly unlikely the vehicle could ever reach this figure).