Ah, after reading this thread I've realised I transposed the numbers...... crazy3

So..........

Originally Posted by DaveW

Well, I've tested my fleet, and here are the results.

2012 Golf, Vehicle speedo shows 70mph,GPS indicated 65,

2016 Polo, Vehicle speedo 70, GPS 68.5

2005 Roadster, Vehicle speedo 70, GPS 68.5

2016 Plus 4, Vehicle speedo 70, GPS 69

Interesting result.


I certainly don't push my luck, because we're under the gantries a lot around here, but I also want to optimise journey times.

DaveW
'05 Red Roadster S1
'16 Yellow (Not the only) Narrow AR GDI Plus 4