Miffy
Senior Member
- Joined
- Sep 6, 2008
- Messages
- 7,356
- Reaction score
- 4
- Location
- Bromley, London
- Your Mercedes
- CLK 320 CAB Elegance C208
Yesterday I managed to stick to a constant speed around the m25 so decided to compare the two speeds.
Once I got to 70, I stuck the cruise on and let it take over. It seems that the GPS reads slower by around 3mph on avg
@ 70 (dash needle and digital) GPS was showing 67
@ 80 (dash needle and digital) GPS was showing 78
each reading was based on a constant speed over at least a mile
anyone else compared the two speeds before?
Once I got to 70, I stuck the cruise on and let it take over. It seems that the GPS reads slower by around 3mph on avg
@ 70 (dash needle and digital) GPS was showing 67
@ 80 (dash needle and digital) GPS was showing 78
each reading was based on a constant speed over at least a mile
anyone else compared the two speeds before?