CNET video on speedometers: shows higher speed than reality.is our Micra w/in limits?

PS: damn i hate this char limit on the thread title ...

anyways

https://www.youtube.com/watch?v=jHxD...annel=Roadshow

just watched this from one of my favorite car hosts, Brian COoley from CNET.

the tl;dr -

in the US, speedos are allowed to be 2-5% from actual speed (meaning, the higher the speed, the greater the discrepancy,)

in Euro, it's 1/10th of the speed, +4kph.

to my GREAT SURPRISE: brian says the odo is completely accurate.

so my question: is our Micra within either of those limits? and is our odo really truly accurate? that would be a great relief for me.

The Micra SR loaner I had from Nissan: the odometer was correct. The speedometer showed 100 kph at 96 kph actual, but the odometer was accurate within 0.1 km after 20 km of driving.

The obd2-reported speed WAS correct, only the speedo needle was off. Which suggests to me the ECU was programmed with a speedometer offset.