To those of you with GPS speedos

Wig

Not Iphones with Apps

On a clear day when your nav can see the sky clearly and you are doing a steady constant 70mph indicated on the car's speedometer

• What does your nav say the speed is?
• If there is a difference what car is it?

mikey72

My zafira is within 1 or 2mph.
The classic mini is about 60 for a true 70.
The 80's renault is about 65 for 70.
I've found newer cars with electronic speedos are within a mile or two now on other cars I've driven.

shaun_from_Africa

Ford Focus.
Indicated 70mph on speedo, 65mph shown on satnav. (Garmin Nuvi 770).

Volvo V50
Indicated 70mph on speedo, 67mph shown on Satnav.

Chevrolet Impala (in USA).
Indicated 70mph on speedo. 70mph shown on satnav.

Nissan pickup. (In Libya).
What's a speedo?

Gloomendoom

Exactly the same as on the sat nav. I'm beginning to think the two are linked.

Electr0n

peugeot 308 is indicating 5-6 mph faster than speed indicated on TomTom

Borrisx

My pogo reports the speed at 2-3mph less than the speedo so nothing major.

Sagz_2

Skoda Fabia says 70 and the TomTom says 66

TrickyWicky

On the renault it'll be 2-3MPH below. On the ford Ka it's a lot lower. Ka says one speed the nav will read about 7MPG lower. Ka did have its speedo fixed last year so I'm not convinced of its accuracy. That said, I trust an electronic speedo less when its working out an average speed.

agrinnall

TrickyWicky wrote: »

On the renault it'll be 2-3MPH below. On the ford Ka it's a lot lower. Ka says one speed the nav will read about 7MPG lower. Ka did have its speedo fixed last year so I'm not convinced of its accuracy. That said, I trust an electronic speedo less when its working out an average speed.

Where can I get one of these sat navs that calculates what your fuel consumption is? :rotfl:

Wig

mikey72 wrote: »

My zafira is within 1 or 2mph.
The classic mini is about 60 for a true 70.
The 80's renault is about 65 for 70.
I've found newer cars with electronic speedos are within a mile or two now on other cars I've driven.

So the Mini and the Renault are both underreading on the car speedo?
Oh dear. Is that a 1980s mini?

ariba10

My Espace speedo is about 8/10% more than GPS