Small is beautiful, or so they say. Who says it? Well, being Japanese, the people at Daihatsu may not but they would probably concur with the sentiment. If there's one thing that most obviously binds Daihatsu models together, it's smallness. The Sirion is a supermini by Daihatsu's reckoning but its dimensions correspond better to what the rest of the market dubs a city car. It has small petrol engines like a city car and a lively lightweight feel like a city car. From new, it was even priced like a city car. In the end, where the Sirion fits into the grand scheme of things isn't too important. What could be is that Daihatsu knows small cars and the Sirion is a small car from Daihatsu.