Originally Posted by Mach Jump
With long range tanks 1,083nm
Very few DA40 TDIs have that option, because it severely limits the useful load. It's much more common with the gas-guzzling, but lighter, Lycoming engines.
As you observed, the quoted ranges are at 10,000 ft, but you'd struggle to fly any distance at that altitude in Western Europe without busting airspace.
Last summer, I flew a DA40TDI 390 nm from Avignon to Caen in 3.25 hrs, mostly at flight level 65. Fuel used was 21 usg and no oil. In UK motoring terms, that's a ground speed of 138 mph at 25 mpg.
