Why do turbo charged cars need premium gasoline?

Question

Why do turbo charged cars need premium gasoline?

Answer 1

The higher octane prevents the gasoline from self igniting.  

In a turbo engine, with the additional pressure boost (from turbo), it is very easy for the pressure inside to piston to go critical (and beyond) where the gasoline + air + pressure ignites.

So high octane is critical.

Good luck...

Answer 2

Toquell pre ignition/knocking most modern cars have knock sensors which r****d the ignition timing .That makes for poor performance.

Answer 3

Because otherwise engine go boom. then car stop. man at garage give paper. you angry + sad. :...(

Why do you think? lol. Good engines need hi-octane fuel to reach the higher speeds.