sure or not oxygen sensor can help? i drive preve cfe, now feel wan change car but the economy not good. haiz. but i worry x50 become like preve no resale value again and the car doesnt really can last like 10-15yrs. what i mean is like if i drive a altis i bought in 2012, i will still drive it and no reason to change car becos the car aging quite well in terms of looks and interior, so u dont have to change car again. if x50 then later 7-8yrs wan change again, then need spend another money again..

my preve have no major issue like reliability problem at all, no broke down before. just fuel guzzler and perceived quality isnt there. dont feel like buying another proton badge, but seems like public view on proton has changed so much since x70.

The proton sa told me can refund wor.. which info correct?

Cannot refund... if dont want x50 can change to other proton models...

Persona lowest spec cvt rm44k, highest 53k.
X50 lowest spec 75k (not confirmed), highest spec around 99k (not confirmed)

Even though it say heavily revised, it just lost out the fuel consumption vs rival on today's market. Maybe lack of aluminium engine block use effect the weight of the engine.

Had a Preve cfe and waja cps as my office use car, both fuel consumption is really on high side especially the preve cfe. Averaging 8km/l on preve while 9-10km/l for cps.

Believe persona vvt not much different on fc. Cvt is annoying poor on preve

Engine weight maybe contributed around 50kg more only compared to all aluminium The rest of the extra weight is due to proton chassis. Better and harder metal used in certain parts of the car, making the chasis heavier a bit.

Btw your preve and waja very high fuel consumption le. Even my 2.0L 20 years old engine with 225hp only use average 10km/L (40% highway, 60% penang island office hours). Somemore i am spirited driver.. perhaps its time to change your oxygen sensor if more than 80k km no change d. Small investment of rm200 to get at least 15% fuel savings back.