Thanks to Alex’s recent road test and my first drive at the launch last year, we already know that the latest Kia Rio is a stark contrast to its predecessor, being a genuinely interesting, high-value alternative to a Ford Fiesta.However, we’ve only driven the rather lacklustre 1.4 petrol, so we were keen to see what the 1.1-litre three-cylinder diesel was like. This is the most impressive engine in the Rio range, as it boasts 85g/km emissions, which according to Kia, are the lowest of any non-electric vehicle on sale in the world.