
The interior design was clean and functional, although the slope of the roof hampered rearward visibility somewhat. Kia also offers a 60/40 split-folding rear seat to accommodate longer items, but that feature isn’t available on the base K5 LX trim level. The K5’s Hyundai Sonata sibling also offers a smidge more cargo space, at 16.3 cubic feet. Styling is subjective, but the lighting design makes the K5 a lot more distinctive.Īt 16 cubic feet, trunk space is above average, but behind the 16.7 cubic feet of the class-leading Honda Accord. However, rear legroom is a bit below average. The K5 has more front headroom and legroom than other midsize sedans and only 0.2 cubic feet less rear headroom than the class-leading Toyota Camry. Sleek styling normally comes at the price of interior space, but that isn’t the case with this Kia. Styling is subjective, but the lighting design makes the K5 a lot more distinctive. While the overall shape of the K5 is very sleek and attractive, many other sedans have a similar shape these days.
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At the front, you get squiggly LED daytime running lights Kia calls the “Heart Beat,” plus a horizontal light blade across the back. However, the main distinguishing feature of the K5 is lighting. The Hyundai is a laid-back cruiser, while the K5 is meant to be sportier. That’s in line with both sedans’ personalities. Where the Hyundai has smooth lines that make it seem like it’s floating along the road, the K5 is a bit more muscular, with a bulging hood and a front bumper that juts forward like the chin of a 1940s comic book character. The K5 shares a basic platform with the Hyundai Sonata, but designers did a good job of distinguishing the two. The GT starts at $31,555, but our test car also had the optional GT1 package, which adds a 10.25-inch touchscreen, Bose premium audio system, and adaptive cruise control, among other features.


Our test car was the range-topping K5 GT, with a more powerful engine and sport-tuned suspension. Pricing for the 2021 Kia K5 starts at $24,555 (all prices include a mandatory $965 destination charge), but that only buys an entry-level LX model. The K5 has many rivals, including the Honda Accord, Toyota Camry, Nissan Altima, Mazda 6, Subaru Legacy, and Volkswagen Passat, as well as its sibling - the Hyundai Sonata. Kia needs to pull out all of the stops if it wants buyers’ attention. The last Optima was a good-looking car, but Kia dialed things up even further this time, while adding a bigger touchscreen, more driver-assist tech, optional all-wheel drive, and a sporty GT model.

While the name is a sterile alphanumeric combination that car buyers are more likely to associated with a Chevy SUV than anything wearing the Kia badge, the K5 looks pretty good on paper. The 2021 Kia K5 is the replacement for the Kia Optima.
