what is your favourite type of car engine?

Question: what is your favourite type of car engine?

Asked by kiyan98 to Usaid on 12 Mar 2012.
- Usaid Rauf answered on 12 Mar 2012:
  
  Hi kiyan98,
  
  I really like the Mazda RX-8’s rotary engine.
  
  Mazda’s rotary engine cars: http://www.mazda.com/mazdaspirit/rotary/
  How they work: http://auto.howstuffworks.com/rotary-engine.htm

Question: what is your favourite type of car engine?