I cannot imagine a dealer taking this concern seriously.......and there really is nothing to repair. If it was off by 5mph or more then the only course of action is panel replacement.
The analogue is IMO, just about in agreement with the digital and in all seriousness, any analogue instrument falls into the 'close enough' range......same as any of the other analogue instruments.
If you split hairs that tightly you'll go crazy if you compare your readings (digital and analogue) to a GPS......be prepared to see the panel one to three percent higher than GPS actual.
Going further, as the tires wear, the percentage will increase since they are getting smaller in diameter.
Worry not, enjoy the car.
Rob
