Sounds about right for a 110TDI, I get between 510 - 570 miles a tank on my standard tdi150. I could easily get over 600 miles a tank if I drove like a grandad. Its gone under 500 miles a tank a few times when the turbo hose blew out and when the TPS was faulty.
Cheers I do mostly drive nicely but it would be rude to drive nicely all the time
I have a 2003 110 TDI and normally get between 51 and 55mpg. Even travelling at 80mph on the motorway with four adults on board averaged over 50mpg.
A couple of years ago my coolant sensor stopped work, I didn’t noticed any significant increase in fuel usage. But had it replaced because I didn’t like driving around not knowing the coolant temperature.
1.8T VAG is the furthest thing from a Prius and nobody should buy one if they don't want most of their money going through a nozzle and into the hole of fun ;