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Fourth-generation Yaris ups its scale and sporting quotient, but to what effect?

Even with the greatly accelerated shift towards full electrification that has defined so much of the automotive conversation over the past few years, the Yaris remains one of only a tiny handful of hybrid superminis currently on sale.

It counts full-hybrid versions of the latest Honda Jazz and Renault Clio as its only direct rivals. And even as all-electric superminis become increasingly popular, it isn’t surprising to see the staunchly pro-hybrid Toyota stick with a blend of petrol and electric power but refine and improve it extensively.

Yaris comes on either 16in or 17in alloys, although there are four different wheel designs – a separate one for each trim level. All but the 16s of the entry-level Icon-trim car have a two-tone machined finish.

The standard Yaris’s hybrid powertrain is based on a three-cylinder 1.5-litre Atkinson-cycle atmospheric petrol engine that’s related to the 2.0-litre four-cylinder block found in the latest Toyota Corolla and Toyota C-HR hybrid models. It’s hooked up to two electric motor-generators, with a more compact hybrid transaxle transmission plus a CVT-like epicyclic power splitter.

The motor-generators draw and return their power from a 178V lithium ion drive battery. Lower-rung models use a 114bhp unit, which drives the front wheels, while the GR Sport and Premiere use a new and more potent 129bhp version. 

The increase in power has been achieved by fitting the Yaris with a more powerful electric motor producing 83bhp - up from 79bhp - and a revised transaxle. 

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The Yaris is the first global Toyota model to sit on the Japanese firm’s TNGA-B modular architecture and it reaps impressive improvements in both the packaging and styling departments.

It is 55mm shorter than its predecessor at the kerb but also has a roofline some 40mm lower, largely banishing the mini-MPV-like proportions that made the second- and third-generation cars ungainly. It also has a wheelbase that’s 50mm longer.

Combined with an increase in track width of up to 57mm, these dimensional changes promise a cabin that builds on the ‘small car, big interior’ identity that has historically been one of the Yaris’s key strengths, as well as a chassis to demonstrate significant dynamic improvements.

MacPherson front struts and a rear torsion beam serve as suspension, as is typical of today’s supermini class. Design-trim models ride on 16in alloy wheels, although sportier configurations get 17in rims and a firmer suspension set-up right out of the box.

The GR Sport and Premiere Edition models are slightly more eye-catching. GR Sport rides on 18in wheels and features an updated mesh front grille and black trim. Premiere Edition comes with 17in wheels as standard and bi-tone paint.