Mii disintegrates

Hello all, my Mii Mango dissolves after 3.5 years. Engine 3 cylinders, 60 hp. Currently it has the following defects: • air conditioning defective. Maintenance was carried out every year • transmission. reverse gear goes bad. Third gear also • heat plate cracked clatters • window guide passenger side broken. Window wedges up while driving. leaks and driving noise from 100 km/h . • fuel consumption high. 6.7 liters to 100 km. The car has a new car garan until September 2018 Tie. Was already with my dealer. Planned are 2 days workshop. At the window guide he has already announced whether the guarantee will take over. There are people who also had problems with the window guide. So the Ibiza was a top car. The Altea XL 1.6 TDI is now 5 years old. Also to this day no complaints. He has meanwhile 100000 km down. Mfg Volker