Engine mounting only to eliminates the vibrations coming from your engine. Nothing to relate with floaty feeling steering.

Our car is old. Really old. Need to replace all suspension parts to make it feel new again.

Oh, in case you're doing full replacement of the suspension parts, don't buy the cheapo aftermarket no brand/mitsubishi from shopee. Buy something with a brand name, they will last longer. Better yet, find Proton original is the best, but they cost a pretty penny.

Any weird sound from engine bay? My when this out, Alternator about to die.

A lot of things can do this bro. My most common reason for getting higher FC, except being idle engine for long time, or change in driving behaviour, or change in percentage of ciry driving, are:
- Engine oil overfilled (i tend to keep it middle level, but sometimes just filled until max)
- Spark plug going out, still usable but going out.
- Having injector cleaner or catalytic coverter cleaner poured into fuel tank.
- Tire pressure lower than it should be,
- Dirty engine air filter, or
- really hot weather and i blast air cond at low temperature + city driving.

Anything else you really need to continue investigate already.

how u drive so low 6.7L

My car is manual, purchase on 2010.
Unfortunately on 2022 it get into flash flood at 300K km and need me to change new engine.
On 2024, the best fuel consumption i get is 6.9 L/100km.
Currently fuel consumption at 7.1 L/100km.

I bring the car to work everyday.
My driving style normally i change gear before rpm exceed 2000.
Only at time i need more power, will push rpm around 3000 before change gear...

For my car it's usually throttle body as it gets dirty very often. Based on your service record, you can always check for idling issues first such as spark plugs, air filter, or worse, sensors and others.