Inspect Speedometer On-Vehicle
WARNING: This page is about a different car, the 2002 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Tire wear and tire over or under inflation will increase the indication error.
Using a speedometer tester, inspect the speedometer for allowable indication error and check the operation of the odometer.
If error is excessive, replace the speedometer.