Car is Myvi 1.0 Manual, age of car is about 9 years +

this month my car spoiled 3 times.. suddenly the car just 'fell asleep' while driving on highway..
1st time fix: mechanic say engine plug need to change
Damage cost: nearly RM100 
Fixed ady, then 2 weeks later same thing happened. But before the car 'feel asleep', the car was jerking.

2nd time fix: say clutch, drive shaft and timing sensor spoiled, so need change also
Damage cost: nearly RM1k   
Fixed ady, then 1 day later same thing happened AGAIN! This time got metal cranking sounds, car jerking, lost of power, and yellow engine light on, and it fell asleep.
Able to start the car after a few minutes of rest (car very sleepy i think)

3rd time, want to fix: say mayb it's engine issue, if open it up, labor charge ady rm600. This price not inclusive of repair and replacement of parts.
Some things confirmed need to be replaced if the engine is opened up. 

Have you experience the metal cranking sound with car jerking issues?
What maybe the cause of this problem?

  Need help pls