[kevkrom]

Unfortunately, it’s only 621 miles

That's still a greater range than typical for current cars. My Camry gets about 450 (+/- 20) miles on a full tank.

[PeaceBeWithYou]

I would bet that 1000km/621 miles is like the estimated MPG on a new car window sticker, your mileage will vary(be less).

In the case of a hybrid/electric quite a bit less.