It's not a bug, it's a translate error. It's clearly stated in german on this url: https://shops.audi.com/de_DE/web/zubehoer/p/geschwindigkeits...
"ab etwa 30 km/h" -> "from approximately 30 km/h"
That 'etwa' 'solves' the 'bug'. ;-)
"ab etwa 30 km/h" -> "from approximately 30 km/h"
That 'etwa' 'solves' the 'bug'. ;-)