Based on the conventional Yaris, the hybrid features a 98bhp version of the Hybrid Synergy Drive system fitted to the Auris HSD. This comprises of a 1.5-litre petrol engine and more compact electric motor, transmission, inverter and battery pack, saving 20% weight compared to the units in the Auris.

Because of their small size, the system can also be tucked away under the cabin, meaning no loss of passenger or boot space compared to its petrol or diesel sibling. Hybrid models also feature Toyota’s new “Keen Look” family face, which is set to appear on other models in the near future.

Toyota hasn’t announced pricing or economy figures as yet, but has promised best in class CO2 emissions and a short distance fully-electric driving mode. The Yaris allows hybrid technology to be sold into the largest volume segment in the European market, and one which is prolific in inner city use.

The Yaris HSD will get its world debut at the Geneva Motor Show in March, before going on sale in the UK early this summer. It joins a rapidly expanding family of hybrid vehicles on offer from Toyota, including the seven-seat Prius+, Prius Plug-In Hybrid, refreshed Prius and outgoing Auris HSD.