trying come back here and comment after 5 years
see if there is any problems or weird noises
i can guarantee u that u will say u have

mine is japanese car somemore and i also have...they don't last long at all
meanwhile my proton saga 14 years old soon, no such noises

TLDR : 4 cylinder > 3 pot anytime

actually there are 3 things that owners should be worried about in the X50/X70
which is the reason why i won't recommend anyone to buy

the 3 pot engine, the turbochargers and the DCT

the same goes to perodua and other manufacturer as well(not just proton)

reliable or not is 1 thing
but almost no owner service the turbo

yes, turbo need servicing too and manufacturer do not provide such service
which leads to turbo failure

think of the turbo as another engine, another wear and tear, another part of the car that requires your maintenance and your care
which means another money burning parts

v6 > all