VerdictThe Toyota Aygo X Hybrid is ultimately at the mercy of its rudimentary forebears. The hybrid engine is not just a substantial improvement in terms of performance and refinement, it’s also far more efficient, with 86mpg reached on test. Not if Toyota has anything to say about it, as in a surprise move it has invested in its tiny Aygo X by fitting a cost-effective and highly efficient hybrid engine as part of a wider facelift. Previously, the Aygo X was only available with a 1.0-litre three-cylinder petrol engine combined with either a five-speed manual or CVT transmission. This new model throws that ancient motor in the bin and replaces it with a hybrid powertrain already found in the Yaris and Yaris Cross.