Speedo meter is not working properly and fails the warrant

What is your question?

the speedo needle travels pass the last speed to the end and spins back to 0 and stays there for a couple of ks and goes up to 20 the up to 140 if you going on the motorway at 100ks the needle goes pass it straight down then again.. when driving in a 50-60zone area..the same goes to 100 to 140-160 then to the end stays there couple ks then back to 0