Why is the China VI vehicle speed limited to 20 km/h?

1 Answers
LaJuniper
07/30/25 7:07am
Vehicle torque and speed limitations are not implemented by manufacturers by choice, but are regulatory requirements for China VI models to ensure compliance with emission standards. Here are the specific details: Torque Limitation: Torque limitation, also known as primary driving performance restriction, is activated when issues such as exceeding OBD emission limits persist for more than 10-36 hours without resolution. This reduces the vehicle's torque output by 25%, limiting its power. Speed Limitation: Speed limitation, or severe driving performance restriction, is enforced when emission issues exceed OBD limits and remain unresolved for more than 20-100 hours. The vehicle's speed is then restricted to within 20 km/h.
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