I had one experience where a friend downgraded Proton car saying that the manufacturing quality is very low. I think she is still living in the 80's when Proton was still taking its baby steps towards perfection in automobile industry. She even stated that a relative quit his job in Proton because he did not want to bear the responsibility of killing people on the road. Oh! Come on!
However recently in July, Direct Line Breakdown in London revealed that Proton is one of the few most reliable cars on British roads. This result is through their research on the car's reliability. Other makes that are among the reliable cars are Honda, Toyota, Mazda and Nissan. Proton coming hot on the heels of these famous makes to be the fifth least likely to suffer mechanical breakdown.