For the third year in a row, the 1.5- petrol engine of the Hybrid Synergy Drive has won best 1.4 - 1.8=litre engine in the awards and has also been named 'Best Fuel Economy' for its application in the Toyota Prius.
This means the Hybrid Synergy Drive has won both categories every year since it was launched in the second generation Prius in 2004.
Dave Shannon, MD of Toyota Ireland said: "This encourages us in our belief that the Toyota Prius is a real world solution for customers who want better fuel economy and low CO2 together with driving pleasure."
The results of the International Engine of the Year Awards 2006 were decided by a panel of 61 automotive journalists from 20 countries.
Trish Whelan.