Editors note 12/06/07 - Mazda Australia have confirmed that only the 1.5-litre engine will be available in Australian delivered Mazda 2's. Aussies miss out again...
Mazda are introducing a new super-economical petrol engine option with their new 2 when it goes on sale later this year in Europe. Based on their 1.3-litre aluminium MZR four-cylinder the new engine uses a valve timing system called â€˜Miller cycleâ€™ which holds the intake valves open slightly longer during the compression stroke than is normal in a standard engine.
The Miller Cycle technology is not new, in fact Mazda fitted a 2.3-litre Miller Cycle engine to their Eunos 800M back in 1997. The Miller Cycle process was created by Ralph Miller back in the 1940â€™s and interestingly until recently only worked in tandem with the fitment of a super-charger.
Mazda have found a way to make this technology work in a naturally aspirated engine allowing efficiency to be increased through the reduction of engine pumping losses. When used in conjunction with Mazdaâ€™s new CVT (Constantly Variable Transmission) it is said that fuel economy is improved by 20 per cent.
This allows the Mazda 2 equipped with the 1.3-litre Miller Cycle 4-cylinder and CVT to achieve an amazing 4.3L/100km average fuel consumption figure. The Miller Cycle technology also helps to lower CO2 emissions. So, why would you buy an expensive hybridâ€¦?
We have no word on when or if the new Miller Cycle engine will be an option in Australian delivered Mazda 2â€™s but will advise further as soon as more is known.