I have the same rising panic system in the Fabia as the VW. Don't see it often as I plan my refuelling, but it can be annoying/entertaining.
There's a fuel station at the bottom of the road. Always 9-13p/lit more expensive than in Swindon, 11 miles away. If I travel East, to Wantage, it can be even cheaper than Swindon, but sadly I rarely go that way. So I'm always watching the guage, and thinking ahead to journeys, and will often fill up when still over half full, if that's the last time I'd be near the cheaper fuel.
The Doblo however can bite. The fuel tank is reduced width, for the lowered floor/wheelchair ramp. The fuel gauge is unchanged, so the range to empty is always too much. The specialist company that sold it to me has stuck a label on the dash, warning not to allow it to go below 1/4 full. It drops as expected from full to 3/4, a little faster to 1/2, but after half, I need to be planning a fuel stop, as it drops very quickly from there. It has gone below 1/4 on a couple of occasions, and from 1/4 it plummets. Scary. As these vehicles usually do local runs, this isn't an issue for most owners. A run to my brother's, 100 miles each way, requires a refill for the return. Real range, probably about 150-175 miles.