with upgraded suspension and braking systems. Production of the Security models began alongside the series model at BMW's Dingolfing plant, with armouring prepared before being shipped to a specialist facility in Toluca, Mexico, where the vehicles complete the final assembly stage. Long-wheelbase sedan (China only) A long-wheelbase (LWB) version of the E60 5 Series was offered in China. Models included the 520Li, 523Li, 525Li, and 530Li. The wheelbase was increased to from the original wheelbase of , a increase. BMW 5 Series Authority Vehicle The 5 Series Authority Vehicle is designed for police forces, fire services, and emergency rescue services. It has a firearm bracket in the rear center armrest. Safety Initially the 5 Series received a three-star rating for adult occupants. However changes were made to the steering column, footrest, door trims, door latch, airbags and electronic software and the car was retested achieving its four-star rating. BMW claims the modifications improved the car's Euro NCAP score, not the vehicle's safety; consequently BMW chose not to recall the earlier-built cars. The American Insurance Institute for Highway Safety (IIHS) gives the 5 Series a "Good" overall rating in frontal collisions but a "Marginal" overall rating for side impact collisions. The IIHS reported their side impact test would likely cause driver related rib fractures and/or internal organ injuries. The IIHS tests were conducted on models built after May 2007; these models had modifications to improve side impact safety. 2007 facelift The 'Life Cycle impulse' (LCI) models were introduced in March 2007 (for the 2008 model year). Styling changes were relatively subtle, and included revised headlights, tail lights and front bumper. The interior was significantly revised. The iDrive system was upgraded with programmable "favourite" shortcut buttons (for 2009 models), a revised menu system, preset buttons for the audio system and the switch from DVD to hard disk based storage (for 2010 models). Mechanically, the 5 Series gained the new engines and transmissions from the E70 X5. On automatic transmission models, a shift by wire shifter replaced the mechanical version and shift paddles were available for the first time on a 5 Series model besides the M5. The active cruise control was upgraded to bring the vehicle to a complete stop and accelerate from stationary (called "Stop & Go"). Other changes include adaptive headlights, LED rear lights, Lane Departure Warning, night vision and Brake Force Display. The E60 LCI was the first BMW