Often when a car comes surfing into shore on a fast tide of hype and unrealistic expectation, its arrival can be something of an anti-climax. And few hatchbacks in recent years have been more hyped than this new Toyota GR Yaris. And no wonder: it has the world’s most powerful three-cylinder engine (for now…), its own four-wheel drive system with Torsen diffs, a manual gearbox and all Toyota’s rally heritage to bump expectations to fever pitch level.