Two new awards for Toyota's Fuel Efficient Engines from the 2010 international engine of the year jury

Toyota's engineering excellence has once again been rewarded with wins in the 'Green Engine of the Year' and  'Sub-1.0 Litre Engine of the Year' categories at the 2010 International Engine of the Year Awards.

These two victories represent true international recognition, the engines having been tested and judged by a panel of 72 motoring journalists from 35 countries. Toyota's latest success reinforces the company's impressive International Engine of the Year track record, with 22 wins (out of a total 144) since the awards began in 1999.

Green Engine of the Year — Toyota Hybrid Synergy Drive^®

Toyota Hybrid Synergy Drive^® regains its crown as 'Green Engine of the Year' in 2010, winning the award for the fourth time in the last five years. Available in the Prius and Auris HSD, this globally recognised powertrain technology is one of the most successful in the history of the awards, with a total of 11 titles.

The Auris HSD's Hybrid Synergy Drive^® powertrain returns fuel consumption of only 3.8 l /100 km and CO₂ emissions of just 89 g/km. Both the Auris HSD and the new Prius comply with Euro 5 emissions standards, and are expected to meet those of Euro 6.

Being a full hybrid powertrain, HSD can operate in pure electric mode at speeds of up to 50 km / h, with a driving range of up to 2 km depending on battery charge level. The powertrain also represents an advance in exhaust air quality with limited NOx and zero Particulate Matter (PM) emissions.

Summing up, the judges praised Toyota's HSD powertrain as "The essence of mechanical, electric and electrical ingenuity in one affordable package", "still the best green technology available on the market -reliable and durable, with very low real life CO₂ emissions" and "more powerful, polished and parsimonious -the latest, thoroughly redesigned version of Toyota's iconic hybrid drivetrain is better in every way that counts".

Sub-1.0 Litre Engine of the Year — Toyota 1.0 VVT-i

Toyota's light and compact 1.0-litre VVT-i engine has won the 'Sub-1.0 Litre Engine of the Year' category for the fourth year running. Featuring an all-aluminium construction, the new 1.0-litre, three-cylinder petrol engine weighs only 67 kg, making it one of the lightest internal combustion car engines on the market today.

Developing 68 DIN hp/50 kW, this engine is not only the most powerful 1.0-litre unit in the A-segment, but also generates class-leading specific torque of 93 Nm at 3600 rpm.

High levels of low- to mid-range torque are essential to good driveability in stop/start, constant acceleration and braking urban driving conditions.

The Toyota development team achieved this through a low-friction three-cylinder, and the fine-tuning of the intake system through optimised manifold length and the use of optimised diameter for the intake ports.

Featured in the Aygo, iQ and Yaris, Toyota's 1.0 litre unit was acclaimed by the judges as "one of the most  pleasant and frugal sub-1.0-litre triples that propels a four-seater" and "… still the one to beat in this category class". They added "this three-cylinder has the punch and the torque to ensure the car is fun to drive around the city, but best of all is its very, very low fuel consumption".

Engine of the Year Awards — Toyota roll of honour

1999

• Best Eco-friendly: Toyota Hybrid (first generation Prius)
• Sub-1.0-litre: Toyota 1.0-litre (Yaris)
• 1.4-litre to 1.8-litre: Toyota Hybrid (first generation Prius)
• International Engine of the Year 1999: Toyota 1.0-litre (Yaris)

2000

• Best Eco-friendly: Toyota Hybrid (first generation Prius)
• 1.0 litre to 1.4-litre: Toyota 1.3-litre VVT-i

2002

• 1.4-litre to 1.8-litre: Toyota 1.8-litre VVTL-i 190 (Celica)

2004

• Best New Engine: Toyota Hybrid Synergy Drive® (second generation Prius)
• Best Fuel Economy: Toyota Hybrid Synergy Drive® (Prius)
• 1.4-litre to 1.8-litre: Toyota Hybrid Synergy Drive® (Prius)
• International Engine of the Year 2004: Toyota Hybrid Synergy Drive® (Prius)

2005

• Best Fuel Economy: Toyota Hybrid Synergy Drive® (Prius)
• 1.4-litre to 1.8-litre: Toyota Hybrid Synergy Drive® (Prius)

2006

• Best Fuel Economy: Toyota Hybrid Synergy Drive® (Prius)
• 1.4-litre to 1.8-litre: Toyota Hybrid Synergy Drive® (Prius)

2007

• Best Fuel Economy: Toyota Hybrid Synergy Drive ® (Prius)
• Sub-1.0 litre: 1.0 VVT-i (Aygo, Yaris)

2008

• Green Engine of the Year: Toyota Hybrid Synergy Drive ® (Prius)
• Sub-1.0 litre: 1.0 VVT-i (Aygo, Yaris)

2009

• Sub-1.0 litre: 1.0 VVT-i (Aygo, Yaris and iQ)

2010

• Green Engine of the Year: Toyota Hybrid Synergy Drive ® (Prius and Auris HSD)
• Sub-1.0 litre: 1.0 VVT-i (Aygo, Yaris and iQ)