My speedo cluster has developed a problem where some of the lid display won't show right, if I was to replace the cluster would the miles from my car stay as is? Don't want to end up reading more or less miles than the car has

The mileage would change to that stored on the cluster, so whatever the previous cars mileage read.

You can have it adjusted by someone with the right equipment though.

It is possible to get just the screen if you fancied trying it.  They are on ebay and also here - http://www.cars-equipment.com/www/en/shop/skoda/oem-a2c53141764-ai-instrument-clusters-maxidot/

 

Thats will fit the maxidot cluster.

These guys are in Portsmouth. Might be worth a call?

I have never used them by the way so I cannot confirm or deny how good they are!

www.cartronix.co.uk/manufacturers/product/171-skoda-octavia-mk2-speedometer-repair-dashboard-instrument-cluster-panel-failing

cartronix are excellent. very quick, while you wait service or send in by courier, done and straight back to you.