For Passat 2007 Siemens VDO ECU mileage correction via OBD, the best tool is Chinese Super VAG K+CAN Plus 2.0 and cost low price.
With super vag use option instrument cdc32xxx old mileage will display adjust job done.
YouTube video on how to use Super VAG K+CAN Plus 2.0:
Veteran’s experience is more reliable, here I attach the dialogue.
Where to get low cost Super VAG K+CAN Plus 2.0?
Of course the old trustful www.uobdii.com, $199 price on sale.
Besides the customers can enjoy the qualified after-sale service and helpful customer service who are working on this shop for many years.