It's not, it's same as in Favorit. It just have some simple analog circuitry (that could be made by Tesla in 80's, so nothing overcomplicated for 1998) to slow down the needle when the fuel sloshes around. The inaccuracies were same as on older Skoda's - usually caused by increased resistance on any of the connection between the float and needle. Byltw, by the time of Felicia, VW already had fully digital instrument clusters. Meanwhile, Felicia still had mechanical speedometer in 2001. I also pointed out several times that Felicia is basically a facelifted Favorit. Most of the car was built in the same way as the Favorit and the few VW sytems like ABS or ECU weren't as integrated into electrical and mechanical systems as they were on newer cars. First Skoda build on VW platform was MK1 Octavia, which is not discussed on this subforum, so there's no need to mention VW. The last sentence applies to this as well. At this point, I don't even feel exaggerating. I've just seen too many kicks into VW in Felicia topics and this one was entirely unnecessary. It's made by VDO Instruments Adršpach Česká republika. Many "German branded" components for Felicia were actually made in Czech Republic. Usually by companies that got bought by larger foreign companies. But really, nothing above has anything to do with increased fuel consumption... Maybe the only thing worth checking would be fuel tank venting, that could cause issues with filling, but I doubt it could cause high consumption. That could be lambda probe (or exhaust leak around it), vacuum leak, or fuel pressure issues, as mentioned above.