Speed I am traveling?

[gaz2uk]

Hi,

I recently bought the TomTom one 3rd edition, and the speed it says I am traveling on the system, is different than my speedo, less by about 4-5mph.

So when im doing 70mph on the speedo it says around 65-66 on the tomtom.

Which is right? (Car brand new if that makes a difference)

[mhvideos]

If you are travelling at a constant speed, believe the Tom Tom. Construction and Use Regulations allow a car's speedo to be up to 10% inaccurate.

[if1977]

This has been spoke about in great detail in other topics and one of them was very recent. If you use the search facility this will link you to them.
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NEW Tomtom GO 500 (hope it is good)
iphone (running all day, doesn't like it)
XL LIVE IQ Routes (Got stolen and miss it)
GO 510 (in drawer now, time for upgrade)

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