Exploring the All New Toyota Yaris

New hybrid engine

The Yaris was the first car in its class to offer you the choice of self-charging hybrid power. In fact Toyota has been developing self-charging hybrid technology for over 20 years and has sold 14 million hybrids which have travelled a total of over half a billion kilometres. We’re now building on that reputation with a new fourth generation self-charging hybrid system.

This 1.5 litre hybrid is directly derived from the 2.0 and 2.5 litre systems recently introduced in the new Corolla, RAV4 and Camry models and was developed with the same attention to component size and weight in order to give you ever-better fuel and emissions efficiency.

As with its four-cylinder 2.0 and 2.5 litre counterparts, the1.5 litre three-cylinder engine with variable valve-timing boasts reduced internal friction and mechanical losses to optimise performance.

In fact, the engine supplies high torque at low revs with increased fuel efficiency. It’s also fitted with a balance module to help reduce engine noise and vibration.

As a result, it achieves 40% thermal efficiency, which gives give you fuel economy and emissions improvements of more than 20% over the current Yaris. At the same time, power output has been increased by 15% and power delivery has been refined to give you a confident and natural driving feel.

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The hybrid transaxle (above) has been fully redesigned, adopting a new dual-axis structure that has reduced its size by 9%. The result is a low-loss gear-train with smaller overall dimensions to improve performance.

The system also uses a new lithium-ion hybrid battery, giving increased output which gives you quicker acceleration. As well as being more powerful, the battery is 27% lighter than the nickel-metal hydride battery it replaces.

The fourth generation hybrid system has been tested in several cities around Europe, with results showing that when operating in urban areas, cars equipped with this technology operate as a zero emission vehicle for 80% of the time.

Published: 5th December 2019

Information correct at time of publication

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