Getting dealership to buy back a "lemon-esque" MINI

I bought a certified pre-owned 2012 MINI Countryman in March covered by an extended warranty. It is now late July and my car has been into the repair shop 6 times. Do you think this is enough to file a lemon claim in Wisconsin? Or at least have the dealer buy it back? I feel like I might have grounds for some kind of case but I want other opinions.

Here is a list of every time I have had to take it into the shop.
1. Car wouldn't start (battery issue) so I took it in to a repair shop and they said everything was fine.
2. Car wouldn't start so I took it into a repair shop which specialized in import repairs and they replaced my battery.
3. Took it in to get the oil changed and they noticed a very cracked drive belt and a leakage in my CV boot.
4. Took it in to get cracked drive belt and CV boot repaired
5. Indication of high battery drain- took it into the shop and they said the first mechanic didn't leave the correct electronic footprint indicating the battery had been replaced.
6. Took it in for a recall repair on the water pump in turbo engine and they found a coolant leak and had to replace that system and the coolant hose.
7. in addition the 3rd day after I bought my car, I took my friend for a ride and they pointed out a small crack in the windshield. I have no grounds to prove that I bought it in that condition but I highly doubt I was able to get a crack in the windshield after driving it less than 20 miles.