Tach and mph clusters are way off
 

Ended up being an easy fix

Maybe the previous owner replaced the cluster for some reason....I don't know if you can program mileage into these clusters, but if not, they may have tried to replace the cluster with one that shows a lower mileage than the original did.

I think the dealer should be able to reset it for you so all the gauges properly zero and properly read.

I think they should be able to. Sometimes gauges do get out of sync since they're not all physically tied to something like they used to be. I'm pretty sure the dealer has the ability to recalibrate them all should that happen. If it happens again then you might need to look into why that cluster was messed with, and/or make sure they didn't pinch or fray any of the wires involved. Electrical shorts make gauges do funky things.