Hi, I am buying a be polo mk2 coupe s 86c 1.3 and the speedo doesn’t work and I was wandering where I should start to look, any help would be greatly appreciated, thanks. 

first thing is check the cable is connected and then that its not broken 

Thankyou I will investigate 

The gearbox end of the speedo cable is difficult to engage sometimes; the clip that holds the cable into the back of the speedo can break through old age; the needle on the speedo can get a bit "sticky" wher e the magnetic force is not enough to push the needle around. A good tap gets mine going again.

The square end of the cable needs to be  - well, square.

If it has rounded off, it will not engage with its socket.

 

Regards