Ford Focus Ecoboost 2015 upwards models - Manifold Oxygen sensor problems.

I would advise anyone who wants to buy Ford Focus to not bother buying one. Actually, i wont be buying Ford ever in my entire life. Im highly disappointed at this brand, i thought it was a better brand. But to my surprise, im left speechless and a very frustrated customer. These Ford focus from 2015 onwards they all experience the same faulty with oxygen sensors, which i believe there were suppose to have recalled the cars and fix these problems since it seems like some factory fault on these units. To make the matters worse, these sensors cost a fortune to fix (R8000). The symptoms of the problems are - no power when accelerating your vehicle and engine light on the dash. Also the engine design architecture for these Ford Focus is extremely poor. If you wanna replace a small thing, you have to remove a lot of things which are unnecessary. Please for you sanity sack, stay away from Ford and you will thank me later. I tried contacting Ford countless times but with no help. They customer service sucks. When the vehicle was weeks old, i would get call from Ford USA asking me if im enjoying the vehicle? I found those calls very dump and stupid because the vehicle was still few days old...what answer did they expect to hear??? And that was the last time i heard from them, when the car was either 3 weeks old.