No, I only reset after filling up..

I can't work it out, surely it must be a glitch, it normally reads between 26 - 30mpg Cheers Paul

2006 TDV6 HSE - Cairns Blue
Tow Pack, Privacy Glass, PTI, DVD.

Then you need to get your car into the dealers and get it seen to before it breaks down!
Maybe you should go and post the pic over on the Prius forums and make them all jealous because it appears that despite the Official claims for them the owners of most Priuses struggle to get 55 mpg  2020 Pangea Green 1st Edition D240 New Defender 110 is here and loving it
2018 Melting Silver Mini Countryman PHEV - soon to be replaced
2015MY Corris Grey SDv6 HSE Dynamic, the best car I have ever owned, totally reliable only a cou0le of rattles in 3 years, now no longer in my care
Also in my garage is a 1996 TDi300 Defender 90 County HT made into a fake CSW

 
L 405 2013 FFRR 5.0 SC
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WINNER - 2009 �Best Avatar� Award
WINNER - 2009 Comedian Of The Year Award

 MY10 3.0 TDV6 HSE, Zermatt Silver, 20" Diamond Turned Alloys, Factory Privacy Glass, Premium Leather, Contrast Stiching, Side Steps, Etc

Gone 2006 '56' 2.7 TDV6 HSE, Zermatt Silver, 20", Side Steps, Brembos, Dynamic Pack, Etc

VW Transporter, 19" Rims, T32 170 BHP, Lowered

I'm back to normal again, 27.6mpg on the drive into work this morning.
I'll keep a close eye on it and if I see anything untoward I'll get it booked in. Cheers Paul

2006 TDV6 HSE - Cairns Blue
Tow Pack, Privacy Glass, PTI, DVD.

Definately downhill in neutral as its been reset

I once had this in my disco 3. I then found out as I clunk to a halt on the M62 my fuel needle had bust. Car thinks its half full of fuel and not using any but travelling distance there fore MPG and range shoots up. I never noticed as SWMBO had been driving the car few days before so it did not register i was approaching 400 miles with still half a tank left. RAC found it amusing though

Pete