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Virtual Adviser's™ opinion
We are here considering two somewhat similar cars, but we can't deny some of the obvious differences. For a start, they are not even classified under the same segment, with the KIA being a large family car and the Hyundai representing luxury car vehicle class. Both the engines are Hyundai-engineered . The first one has a 6-cylinder, 24-valves 190hp unit, while the other one gets its power and torque from a 4-cylinder, 16-valves 163hp one.Safety
Both vehicles got tested by European New Car Assessment Programme (Euro NCAP), with the same number of safety stars gained in the process. That aside, let's consider some other aspects which affect safety. The second vehicle is a luxury car and that gives it a marginal advantage over the large family car competitor, at least that's what statistics show. On the other hand, taking kerb weight as an important factor into account, Magentis offers a marginal difference of 2% more metal.Reliability
I don't like generalizing things when it comes to reliability, although it does seem that Hyundai does have a slight advantage, at least on all of the models level. These are the results of an independent reasearch, while our visitors describe reliability of KIA with an average rating of 4.6, and models under the Hyundai badge with 4.5 out of 5. Some independent research have also placed Magentis as average reliability-wise, and Sonata is more or less at the same level.Above it all, drivers of cars with the same engine as Magentis rank it on average as 4.8, while the one under the competitor's bonnet gets 5.0 out of 5.Performance & Fuel economy
Hyundai is a bit more agile, reaching 100km/h in 0.2 seconds less than its competitor. Still, it lacks the power to win the top speed competition, topping at 212 kilometers per hour, 8km/h less than the other car. When it comes to fuel economy the winner has to be Sonata, averaging around 8.3 liters of fuel per 100 kilometers (34 mpg), in combined cycle. We can't ignore that 11% difference compared to Magentis.
Hyundai appears just a bit more reliable, although the difference is truly marginal. The most important thing when deciding between any two vehicles should always be safety, both passive and active. In this case though, it seems that both cars show similar levels of passenger protection all together, so that won't break a tie. But one thing that actually could is the performance, with Hyundai offering somewhat better performance, just enough to call it quicker. To make things even better, it consumps less fuel! All together, there's not much more to say, in this case I wouldn't even consider anything but Hyundai. 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.