I tried it today on my 1994 GTi 8v.
The MFA just went mad!!!!

The funny thing was that once in this weird mode, when set to 'mpg' it showed 0.2 when idling. Then when i drive it shoots upto 99.9, and then all over the shop..??
The other thing I found was that you could only flick through the mpg, Oil Temp and outside temp status.
So, No it didnt work, 'mpg' just showed lots of useless numbers. Once the car was switched off and back again, all went back to normal
