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 91hp 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, but that fact doesn't break the tie between the two cars. Furthermore, when it comes to weight, a factor that most people underestimate, Sirion offers a marginal difference of 3% more metal.

I don't like generalizing things when it comes to reliability, although it does seem that Daihatsu as a brand displays somewhat better results, when all the models are taken into account. That's the official data, while our visitors describe reliability of Daihatsu with an average rating of 4.1, and models under the Subaru badge with 4.2 out of 5. Independent research findings rank Sirion as average reliability-wise, and Justy is more or less at the same level.We should definitely mention that owners of cars with the same powertrain as Sirion rank it on average as 5.0, 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 being considerably quicker, thus putting more smile on driver's face. 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. Nevertheless, let's not forget that people have different preferences and needs, so what really counts is your personal feel. I'm only here to help. I suggest you spend two more minutes in order to find out which car, based on your needs and budget, would be picked by the virtual adviser™, out of 12.000+ vehicles we currently have in our database.