I considered fitting them to protect the sides of my Q3 but decided against it when I realised that the worst culprits were drivers/passengers of bloody great 4x4s (Range Rovers/Land Rovers/Toyota HiAces etc.) whose doors would be too high for the Q3 running boards to stop.
They do come with instructions but you need full access under the car.
I thought it would be straightforward but in the end contacted them to see if they would fit them for me.
They took almost 40 mins to fit each one and that was with a car ramp that they could move the car up and down and also an experienced fitter.
Watching the fitting I would advise against trying to fit yourself.
Not yet, I don't get my new Q3 until Sept 1st but the Audi dealership is a joke with accessory prices, you can do far far better with aftermarket specialists, theirs can take 15kg also. See the photos they look very good.
Got the beast now, wonderful BUT!!!!! 50 miles done and transmission fails !!! only selecting 2 4 and 6, they took it back and re-programmed transmission software, all good now but they were very embarrassed.