Speedometers usually go to 200 km/h, even though the cars are not designed to go that fast. Experts from TechInsider have found out why this is the case.

Cost-saving. If there are several versions of the same model that differ in engine and other characteristics, it is easier to make the dashboard suitable for top-performance vehicles.
Marketing ploy. When the buyer is presented with two identical cars with speedometers maxing out at 150 km/h and 200 km/h, the choice is clear.
Convenience. If the dashboard is made in accordance with the speed limit in a particular country, highway driving will push the needle all the way to the edge. But if it tops out at 200 km/h, the line will stay mostly vertical on the gauge, and the speed will be easy to see at a glance.