When I disassambled the Instrument Cluster, I had to remove the needle of the Speedometer. Unfortunately I did not mark the original position of the needle and so my speedometer shows about 10 mph too less. I know of 3 methods to get the current speed:

1. Add the difference (10mph in my case)
2. Use the speedometer of your GPS with your Smartphone or Navigation System
3. Use one of the following tables in your car and get the speed from gear and from engine turns per minute:

Automatic

	Mph
GEAR	20	30	45	60	75	80	100	120	135
3		1300	1900	2600	3200	3400	4200	5000	5700
2	1200	2000	2700
1	1900	3200

Manual

	Mph
GEAR	20	30	45	60	75	80	100	120	135
5				2300	2800	3000	3700	4400	5000
4			2100	3000
3		2000	2800
2	1900	2900
1	2900