Also, your comments about the engine having a short life is not accurate at all. Bear in mind Toyota is a global company. That engine was around for some time before it wound up in the UK yaris (actually the 1.5 engine in the Yaris hybrid since 2011 and the Prius before that, is part of the same 'NZ' engine family), and will no doubt continue to provide steller service fitted to various other new Toyota's in various other countries world wide for many years to come.

We have a 17 Yaris 1.5. I don't expect it to have any engine troubles, Yaris have always been good for 100,000+ with little issue.

As mentioned it was an upgraded version of the 1.33 to improve emissions.

Toyota are moving to a whole new platform for its vehicles and the 1.5 three pot is part of this move.

..nothing radically new...should be no reliability issues at all.

Thanks, but it had some radical changes

According to Toyota the new engine used a high 13.5:1 compression ratio, adopting a cooled exhaust gas recirculation (EGR) system and extending the variable valve timing operation so the engine can switch between Otto and Atkinson cycles to gain optimum efficiency in different driving conditions.

A new Variable Valve Timing – intelligent Electric Motor (VVTi-E) allowing the engine to switch between Otto and Atkinson cycles (and vice-versa) in a fraction of a second. Controlled electronically, closure of the intake valve is delayed, reducing the compression phase and further helping reduce pumping losses (Atkinson cycle), and enabling a prompt return to the Otto cycle for better performance under high loads. The phase shift of the exhaust camshaft is hydraulically controlled.

Toyota’s first water-cooled exhaust manifold - The engineers also focused on improving fuel consumption at sustained motorway cruising speeds, leading to the introduction of a new water-cooled exhaust manifold.

So I think it was a bit more than boring out and tinkering with the 1.33