Clio 4, a waste of R 225 000

I have a 2014 Renault Clio 4 dynamique. I have just had a BUNCH of problems with THIS car. Today was the first time since I have had it that I drove to get the fuel warning light to come on. On the fuel gauge it was on the 2nd last yellow line, then it showed that I can drive 81KM with that amount of fuel. In the booklet it says that when the range is 50KM the warning light will come on. I pulled away then the needle on the fuel gauge went to the last bottom most line. It suddenly dropped to 58KM. *** is wrong with Renault, that is NOT suppose to happen. Whenever I have a problem you want me to take it to a service place to check out but they can't find the problems. So I'm stuck with a faulty car from the beginning. This is my 2nd complaint. There's nothing good about this car. And while I'm at it, the 4.5 litres/100km is such a fluke. If you drive at 120km/h you will average 6.6 -7.3 litres100km. The bass reflex system has less base than my cellphone so well done for \patenting"a design nobody would've thought of cause it is junk. NEVER in my life will I buy from RENAULT again. Call me"