User mileage is really not going to be that different than the quoted mileage on Edmunds. Certainly not enough of a difference that it could make the difference in your own decision to buy one vs. not.
Plus, there are really not going to be enough Tiguan drivers on here to give you any sort of realistic look at user mileage. You might get one actual Tiguan driver replying, and are you really going to base your purchase off one guy's driving habits? There are a ton of factors playing into someone else's mileage vs your own.
Go read consumer reviews on edmonds, cars.com
, consumerreports, etc. Plenty of them will mention the mileage they're getting.