Hello all,

This is my first post here, what a great community that you have guys !

My Octavia Mk1 speedo always reads 15% less than the speed that I'm actually doing. Any idea about the cause/possible solution ? Thanks in Advance.

This can be adjusted with Vag com iirc

Had this problem with mine - except mine was over - the garage said there were adjustments on the speedo on the back of the dash (might have meant VAG Com).

I seem to remember there was a bulletin for this quite some time ago. I can't seem to find the info but it might be worth call to Skoda UK as it required reprogramming of the dash insert.

Other than that I think you can change the wheel sensor pulse rate in the dash insert with VAG-COM or VAS.

Well the VAG COM idea seems as a very clean solution (don't like to mess with the car electricals). I'm definitely gonna buy the software + cable. Thanks guys

Perhaps I didn't make it clear, if the dash panel insert should have been flashed then the VAG-COM solution is not a substitute.

VAG-COM will only correct it if it's been in-advertantly changed.

Oh sorry VRSTu I replied before seeing your reply. Got it buddy, Thanks

No problem

Ideally if you can read off your Pulse rate from the dash insert and compare with another MK1 owner that would help.

If it helps, I tested my speedo with my GPS and from 50-140 MPH it was consistently 6 mph high.

Thx Somouk,, it helps to know that I'm not the only one having a problem with his speedo.

These are the true (GPS) and indicated (speedometer) speeds for my Octavia I and Fabia vRS:

True - Octavia - Fabia

30------32-------32

40------43-------43

50------53-------54

60------64-------64

70------74-------75

Thanks DGW

Check with a dealer to see if there are any outstanding campaigns. There was one around 2000/2001 (X reg) for under reading speedometers on the Octavia.

My figures are much the same as Denis, but I see that as no bad thing..... if I travel at the indicated speed and take that as actual, then I should not get caught out by the odd minor fluxuation in speed (say for an overtake on the motorway, etc), however for it sherbo I can see the problem :-)

Do you have original rims and tyre sizes?

I know a lot of people have gone for a slightly different tyre size as the Octy one is a tad unusual and hence pricey.

Changing the rolling radius (or whatever the technical term is) of the wheel will affect the accuracy of the speedo.

duncanj: Yes I already checked that, and the overall radius is stock.

mbames: Quite true,, It's very annoying because here in Egypt the highway speed limit is 100 km/h,, and to avoid being caught I need to be careful not to cross 85 on the speedo, which is too small of a tick-mark to watch for

Check with a dealer to see if there are any outstanding campaigns. There was one around 2000/2001 (X reg) for under reading speedometers on the Octavia.

 

OLD THREAD REVIVAL!

 

 

I wish I had found this over a year ago lol That would relate to my 2001 under reading then! Do you know if this is something which a dealer would address still and if a charge would apply on such an old issue?