Does anyone know if the Maxidot fuel consumption read-out can be adjusted?

I have a 2l TDI 140 H.P. common rail Octavia SE+.

Over the past 9000 miles I've been calculating the fuel consumption fill up to fill up, noting the 'Consumption 2' reading on the Maxidot display and re-setting the display at each fill up.

Over some 9000 miles the averages are:-

Actual MPG (fill up to fill up) = 54.702 MPG

Consumption 2 average = 59.62 MPG

So, if a factor of 0.918 is applied to the Maxidot average this would give the fill up to fill up value; i.e. 59.6 x .918 = 54.7 (to one decimal place) and the readout appears to be 8.2% high. It would appear that if the Maxidot readout could be reduced by 8.2% it would be giving a more acurate value.

The car is due its first service on Saturday and I wondered if this adjustment could be done by the dealer.

The fuel consumption readouts on my previous 2 Octavia 1.9 PDI read about 5% high.

Thanks in anticipation.

It can be adjusted, I believe there is a setting in VCDS and presumably the dealer can make the same adjustment. I keep meaning to do mine......

Yes it can in VCDS.

The hardest part is working out the maths as you need to change the %age figure in the settings.

IIRC its one of the 'Adaptations' in '17 - Instruments' (but my brain is going, so it might not be).

It can certainly be adjusted. I did mine a few months ago.

You've done most of the maths already, by working out what % inaccuracy you have. The dealer should be able to do it. If not, anyone with VCDS can do it.

The adjustment is in "17 - Instruments" Adaptations Channel 3.

Curiously my MPG readout was 8.5% out...seems a common figure for inaccuracy!