Because the units in the UK are MPH not KPH and not everyone could do the calculation .
With most modern cars its purely acedemic because the ecu are just reprogrammed to suite the specific marketplace , infact some electronic displays can be user changed now
In that case it is fail-safe since km/h values > mph values. Just obey the numbers, whatever they are... Anyway, it's claimed somewhere else in the thread that it does not affect MOT.
How many cars have electronic displays for speed? It is so '80s...
Quite many, possibly smaller french cars. I can often read the digital speedo in a nearby car and compare with the speed I'm doing.
Not to pass an MOT it won't.
Up to the end of this year, the speedometer was not even part of the MOT. From 1/1/12, the speedometer must be undamaged, working, and illuminated when the headlights are on. No requirement in the current rules to read in any particular unit.
If it's required to pass an SVA inspection, that's a different matter...
BTW, the one time that you must have a speedometer showing in MPH is when it is being used to take a driving test!
Chris
Good grief. ;-)
i know, but driving can be boring... ;-)
test the condition and operation are listed as test points, if its not able to display in MPH then its operation is not inline with uk specifications i can see a change in the test to correct this omition if its exploited
How will an MOT station test a speedo' for operation?
Care to share the link?
Chris
the Twingo and the Yaris at least, probably some others. Oh, Corvette and I think the Audi A3 (post 2007) supports it as an optional display mode on the panel that normally shows mpg.
I found it useful on one of my previous Jags since the display could be set to show speed in kph on the digital display under the speedometer. That was damned handy and easier to read than squinting at the tiny kph legend on the speedometer.
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