Disgusting deals

Having purchased a low mileage A class Mercedes with a noisy gearbox that I and other gearbox specialists did not feel happy with this purchase I then added to and bought a low mileage C180 Mercedes which I drove home and approx 10km made a stop, got into the vehicle again, started the vehicle which had the brakes locked on and could not pull away forward or back, a mechanic came out from Mercedes Umhlanga and tried to remedy the problem, did not succeed, drove me home and somehow got the vehicle back to the dealership. 2 days later and having lost a lot of money due to depreciation, then purchased a C200 Mercedes coupe with 200k on the clock, very impressed with vehicle only to find the tyres on this vehicle were extremely faulty, having added on 1400km, had the wheels balanced 4 times, due to terrible vibrations etc. A Michelin rep was called out, inspected this vehicle on a wheel balancing machine to find radial and lateral run out on 4 tyres which to me is absolutely impossible, unless in my experience could only have been swopped as these are top of the range run flat tyres. I am appalled to find out that this vehicle had no pre delivery check and was a demo model and was told that the onus is on me, even though these tyres were not damaged from anyone previously driving or negligent driving to cause this problem. The Michelin rep was not really concerned about the run out of the tyres, but was more concerned about the tread depth. It is highly impossible for these tyres to be in this condition at only 200km on the clock and insisted I pay an additional R7000 to R8000 to have them replaced. I feel people out there should be well aware when purchasing a low mileage demo model as this could save an enormous amount of loss of money without any assistance from Mercedes Benz dealership who refused to help in any way. I would never again recommend or buy another Mercedes. Lastly I have been given the run around by Mercedes Benz Gateway Durban for the first service and ended up at Mercedes Benz Pinetown.