poor quality

I bought a mercedesbenz C180 editionc in March 2019. it was somewhere around 11000km on the clock. on the 29th August i had a break down and was told to drive it to the dealer and the fault cleared on its own upon arrival. later that day the same fault came and this time around the lacked power and the Technician arrived on site, the car was lifted to the workshop subsequently. Went to pick it up a week later and 30 minutes away from the dealer another fault came up and was told to drive to the workshop again. the following day went to fetch the car without faults but drives not so nice. Changing of gears from 2 to 3 and 3 to 2 is not that smooth notified and nothing was done to it. Three weeks later, a wheel alignment issue arose, booked it in and it was sorted which came with another problem of vibration and i notified them, nothing was done. when i investigated further it came to light that the tyres are finished to which i did not understand why i must change tyres after 5-6 months of purchase. The way I hear them the blame is on 20000 km that i did from the purchase. I then decided to buy new tyres, on my way to there another flag popped up on the ****pit for brake pads. I now feel that I am driving a very old car that what appears on the clock. Every time when I start the engine is by grace of god that i will reach the destination as if I am not paying or subscribed for some church prayer service. So many faults in 1 month.