BMW is recalling nearly 400,000 older vehicles due to faulty air bags that can explode, putting drivers at risk of being hit by metal fragments. This recall includes certain BMW 3 Series Sedans and Sportswagons from 2006 to 2011. The concern arises from modifications made by owners, particularly the installation of sport or M-sport steering wheels that use air bags from the now-defunct supplier Takata. The National Highway Traffic Safety Administration warns that some vehicles may contain these unauthorized air bag modules, increasing the risk of rupture and metal pieces flying out. Despite no reported accidents or injuries linked to this issue, the potential danger is significant. With millions of Takata air bags still in use, safety experts are urging swift action to prevent potential tragedies. This recall highlights the ongoing challenges of ensuring vehicle safety as older air bags become increasingly prone to failure.