DVVT

The main change between Perodua Viva and it's predecessors (Perodua Kelisa and Perodua Kancil) would be their engines. Then it came the term of DVVT, and Perodua claiming their 1.3l DVVT saves fuel and provide power as same as normal 1.5l engines.

Let us get back to the basics, DVVT or it's full name Daihatsu Valve Variable Timing is based (copycat) on Daihatsu mother company Toyota engine, which is VVT-i (Variable Valve Timing - intelligence). We believe that DVVT is just VVT-i's engine brand name for Daihatsu cars.

DVVT and VVT-i is based by Yamaha's YPVS (Yamaha Power Valve System). Yamaha was bought over by Toyota for it's YPVS because Toyota afraid of losing to Mitsubishi's MIVEC and Honda's Vtec. Yamaha has been provinding Toyota and Daihatsu engines since.

DVVT and VVT-i engines are always put together to be compared with V-tec (Variable Valve Timing and Lift Electronic Control System), i-DSI (intelligent Dual and Sequential Ignition) that is developed by Honda earlier.

All of the Vs (DVVT, VVT-i, i-DSI, Vtec, CVCC, MIVEC, CVVT...) was meant to increase fuel efficiency which is to use less fuel and produce more power from the engine. The objective is the same, the only difference would be their methods.