Sat Nav Speed

[SUM12C]

After borrowing my brothers sat nav (Mio 268) for a trip to Canberra I noticed the sat nav speed was approx 8% more than the cars. How are other sat nav speeds compared to cars speeds?

[Ric]

Interesting. The sat nav is usually more accurate, and has always indicated less for me, because most cars are calibrated to read a few % high.
Do you have stock wheels and tyres, or have you changed the size?

[FO00LY]

my sat nav reads a lower reading than the car and i have stock wheels etc etc....the car dash read 120+ the sat nav reads 110...i know my MY05 rexy was pretty spot on but the liberty seems to be a bit outta wack

[SpecB]

I've got the TomTom 910 and the speedo is slower for sure.

G

[gt_dicko]

Destinator for me reads slower than the speedo, so do all those radar checks on the freeways (not that I trust them).

[XRC15T]

Don't forget there is a slight delay in gps, best to throw in cruise control then measure it.
Speedo should read slightly more than GPS.

[SUM12C]

Yep still running the stock wheels and tyres. Tested at a couple of different speeds using the cruise control, the speedo was less than the sat nav.

[jdm rsk]

when my car shows 120 i am doing 110 on my gps

[Mano™]

Well I got a Tom Tom Go 910 casue me and franky are fully sick.. and were are [ Team Tom Tom ] haha jokes

But yeah.. my tom tom sat seems to be pretty right to the speeds that I do...

[XRC15T]

FUUUUUUUUUULLY

[sleepergtb]

In a recent review of the GT Spec B in one of the car magazines the speedo indicated 93 km/h at 100 km/h.