Speedo calibration with Vag-Com

[descb600f]

Having spent the weekend on the motorway with the sat nav on I realise how out the speedo reading is and wonder if this will give false MPG figures.
Is it possible to recalibrate the speedo using Vag-com or is this fixed??

[mluton]

Its fixed and cannot be recaibrated easily.

Mine reads 70 MPH speedo with a sat nav reading of 65 MPH

Every car will be out to some degree, only changing the Tyre Circumference will put it out massively. E.g larger alloy with the wrong profile tyres.

Oh! and the Digital MPG readout is way out anyways, usually overreads.