The only information I can find about that is an article from 2005 about car makers dropping this informal limitation: > Premium automakers are quietly abandon

The only information I can find about that is an article from 2005 about car makers dropping this informal limitation: > Premium automakers are quietly abandoning their informal agreement limiting the top speed of production cars to 250km/h. https://www.just-auto.com/news/germany-car-makers-dropping-250km-h-speed-limit/ https://www.just-auto.com/news/germany-car-makers-dropping-2... Maybe it's not a thing anymore?