rondetto

I have noticed that when my speedo shows 33mph my sat nav shows 30mph. Just windering which is the more accurate. Anyone know?

GVK.

Speedos are generally 10% over-reading. So there you go.

rondetto

So, I guess the sat nav is more spot on.

Caddyshack

Yes, Sat Nav SHOULD be bang on but they do lag a little sometimes. On some cars it is possible to pop the needle off and move it a tiny amount and put it back on, I did that on my 205 to bring it in line with the GPS on tom tom using two little spoons to lever the needle off.

ajamesc

rondetto

To be honest I have been going by the sat nav so in a 30 area stick to what the sat nav says but the speedo shows about 32 or 33. I'm never sure If I would get a ticket going by the sat nav.

cozzy jeff

iTrader: (4)

theres 5mph between my satnav and the cozzy speedo😮

GVK.

Years ago I did a day at Brunters with one of the Golf magazines.

I had a road angel at the time and it was as accurate as the mag's Datron GPS timing gear.

Indicated 140mph was 131mph.

RichieST

iTrader: (2)

I have found them to be 10% over what the sat nav says across the range. When I go through the roadworks on the motorway it's a 50 limit with average speed cameras, my tomtom live sat nav pings up it's 50 then gives you your average speed as you are going through the roadworks.

If I set the cruise control to 55 the sat nav gives me my average along about 3 miles as exactly 50mph. Not had a ticket yet

rondetto

I find much similar Richie. So I guess it's ok to keep an eye on the sat nav rather than the speedo. It's a bloody nightmare driving through a 30mph zone, it's more dangerous
to keep looking down at the speedo or sat nav than speeding.

RichieST

iTrader: (2)

B max you have isn't it? Does it have cruise control and a speed limiter like my focus and c max does? The speed limiter is quite a good feature, set it to whatever speed you like and it won't exceed it unless you stick your foot right down.

rondetto

Yes that's right Richie, I have got cruise control but never used it so far. Maybe a good idea on the motorways.

cossynut2

I have found to my suprise that my Saffs speedo reading is exactly the same as my Sat-Nav! I expected the speedo to be reading higher than the actual speed I am driving but it seems it is pretty accurate.

scoooby slayer

iTrader: (4)

My sat Nav and v box are the same I'd suggest there bang on, Speedos vary but in my experience the older the car the more they overread

scoooby slayer

iTrader: (4)

I remember when I went to pick up my nms white saph from north Yorkshire rs spares, I drove up in my grey saph I had at the time, went through a village my Speedo showed over 30 mph but as I drove through one of those speed indicator things it said 22 mph lol