The front brake discs are too fragile. They last for only app. 10000kms.
Engine has "hiccups" but no mechanics are able to figure out why.
Many minor faults.
Good car when trouble free. Too many annoying faults. However this is a cheap car so that is to be expected.
My '94 AX 1.1 also had those "hiccups" you told us about, and the mechanics couldn't find out what was it either...
It's not well received in Malaysia as it is branded under the name Proton Tiara (1.1GL). Lots of engine problems mostly and costly spare parts and difficulties in getting spare parts caused Proton to discontinue the model after several years from it's launch.
Also the resale value is very poor; The car worth RM 32K when new, now a 1995 model is worth RM 16,500 in Malaysia.
I had a 1989 F reg AX 1.1RE, and it also hiccuped. It was never cured and I got so annoyed driving it that it got sold after less than a year of having it.