Well, these are two pretty similar cars we have here! It's only details that could potentially make the difference. Considering they both belong to the city car segment and utilize the same 5-door hatchback body style and the front wheel drive system, it all comes up to the specific petrol engine choice they offer. Both the engines are Daihatsu-engineered . The first one has a 4-cylinder, 16-valves 87hp unit, while the other one gets its power and torque from a 3-cylinder, 12-valves 71hp one.

The fact that the Daihatsu got tested by the European New Car Assessment Programme (Euro NCAP), while the other contender didn't, offers a slight advantage, as the 4-star rating is better than none. Still, apart from the official crash test results there are other things we need to be aware of. Both vehicles belong to the city car segment, which is generally not a very good thing safety-wise, still it doesn't help us solve our dilemma, does it? Furthermore, taking kerb weight as an important factor into account, Sirion offers a marginal difference of 3% more metal.

Manufacturers have been building their reliability reputation for decades now and, generally speaking, it appears that Daihatsu as a brand displays somewhat better results, at least on all of the models level. These are the results of an independent reasearch, while our visitors describe reliability of Daihatsu, as well as Subaru, with the same average rating of 4.2 out of 5. Independent research findings rank Sirion as average reliability-wise, and Justy is more or less at the same level.Above it all, drivers of cars with the same engine as Sirion rank it on average as 4.5, while the one under the competitor's bonnet gets 1.8 out of 5.

Daihatsu is undoubtly more agile, reaching 100km/h in 2.6 seconds less than its competitor. In addition to that it accelerates all the way to 170 kilometers per hour, 10km/h more than the other car. When it comes to fuel economy the winner has to be Justy, averaging around 5 liters of fuel per 100 kilometers (57 mpg), in combined cycle. We can't ignore that 16% difference compared to Sirion.

Daihatsu definitely wins the reliability competition, everything taken into consideration. The most important thing when deciding between any two vehicles should always be safety, both passive and active. In my opinion, everything taken into account, Sirion beats the other contender by far, making it the best choice without even considering other things. It all continues in the same direction, with Daihatsu outracing its opponent in any situation possible, making it better choice for boy racers. It does come at a cost though, and that's the fuel consumption... All together, there's not much more to say, in this case I wouldn't even consider anything but Daihatsu. Anyway, that's the most objective conclusion I could've came up with and it's based solely on the information found on this website. Aspects such as design, practicality, brand value and driving experience are there for you to measure them out. In case you have two minutes to spare I invite you to define your needs, desires and budget and see which car would be chosen by the virtual adviser™, out of 12.000+ vehicles we currently have in our database.