The 1.5-litre petrol/electric motor hybrid engine used in the Toyota Prius has won International Engine of the Year 2004.

The Toyota powerplant also scooped prizes for the Best New Engine of 2004, Best Fuel Economy Engine, and Best 1.4-litre to 1.8-litre.

The sixth-annual International Engine of the Year Awards’ results were decided by a jury comprising 56 motoring journalists from 24 countries, including the USA, UK, Germany, Japan, Argentina, South Korea, China and Egypt.

The judges labelled the Toyota Prius Hybrid, “a truly remarkable engine”, and said it “raises the hybrid bar with a combination of better driveability, more technology, and more eco-friendliness”.

Mazda, winner of last year’s International Engine of the Year title, saw its RX-8’s RENESIS Rotary unit top its category, while Honda took home three trophies; one each for its Insight hybrid, Civic hybrid and the 2-litre found in the S2000.

BMW won Best 2-litre to 2.5-litre, and Best 3-litre to 4-litre categories, allowing the Bavarians to hold on to their position as the most successful car maker in the Awards’ six-year history, with 20 trophies. Honda, the world’s most prolific engine builder, has won 19.

Fellow German marques, Volkswagen and Mercedes-AMG, also had reason to celebrate. VW’s 5-litre V10 diesel was voted the best Above 4-litre unit for a second consecutive year, while Mercedes-AMG’s 65 has been named the world’s greatest performance engine, beating the likes of Ferrari and Porsche.