if avanza engine = alza engine, which one feel more power? these two are MPV, look like underpowered?

Alza is sharing the same engine with avanza and Myvi 1.5

Avanza 1.3 engine also sharing the same engine with Myvi 1.3

Also Vios engine actually had higher engine displacement compare to Alza engine.

Cannot. 3SZ-VE has longer stroke - which is a common recipe for higher torque @ lower range but at the expense of lesser top rpm.... so no idea why MyVi 1.5 uses this.

I think it is because myvi is a city car? In start stop traffic low torque at low rpm can be lethargic to drive

A city car need CVT more.

It will cost more.

More or less. Avanza use rwd, will result few hp power loss even tho avanza hp a bit high compared to alza.

Err Vios engine more super power.. If not in Toyota for entry car sedan and selling Rm80 and above..

Nothing can flight with Vios engine at all.
Myvi engine is lowest cost = intel Celeron.
Vios engine = Intel Pentium.