MG ZS speed limit warning system shows wrong limit 25% of the time

Intelligent Speed Assistance is now mandatory on new cars sold in Europe, so accuracy isn't optional — it's a legal and safety baseline. A 25% error rate on the MG ZS means the system is wrong often enough that drivers will start ignoring it, which defeats the entire purpose and potentially creates more distraction than it prevents. Thatcham's research matters here because it's the kind of independent, repeatable testing that holds manufacturers accountable beyond their own marketing claims. For anyone weighing a new car purchase, this is a reminder that a feature being present on the spec sheet tells you nothing about whether it actually works.