The Kia K4 is an entry-level compact sedan that was introduced as a 2025 model, replacing the outgoing Kia Forte. The powertrains carried over, but the K4 is more appealing than the Forte in every other respect, thanks to its increased size and far more modern look and feel. The alphanumeric nomenclature falls in line with Kia’s global naming structure, with the K denoting that it’s a gas vehicle, and the 4 representing the fact that it’s a compact car, positioned below the midsize K5 sedan.
Primary competitors include the Toyota Corolla, the Honda Civic, the Mazda3 and the related Hyundai Elantra. Value is a major part of the K4’s appeal, and it’s one of the cheapest new cars on sale. Its sharp-edged exterior is another standout, while it’s available with some high-tech features that buyers might not expect at this price. A used Kia K4 offers up-to-date technology and premium amenities without premium prices. Two things that aren’t available for the K4, however, are all-wheel drive or a hybrid powertrain.
In January 2026, the Kia K4 Hatchback was introduced to the U.S. It offers more load capacity than the K4 sedan, but costs slightly more. Our Kia K4 buying guide focuses exclusively on the sedan, covering the single model generation available.
Kia K4 Buying Guide: Cost, Reliability, and the Best Years to Buy
Frequently Asked Questions
Which Kia K4 years are the best?
Because the Kia K4 is early in its first model generation, it’s difficult to pick a standout year. While it is a very different vehicle from the Forte it replaced, the K4 benefits from keeping the same powertrains, so avoids a lot of typical first-year issues. JD Power gives both the 2025 and 2026 years an 86 reliability score; at the time of writing, the National Highway Traffic Safety Administration (NHTSA) logged just seven complaints on the 2026 model, which has only one recall so, if we had to pick the best year, we'd go for 2026.
Which Kia K4 years are the worst?
It’s rare to find a vehicle that didn’t have a major recall in the first model year of a generation, but the Kia K4 managed to escape that fate. However, the 2025 model year, especially the early builds, did have some gremlins, including instrument panel failures and inoperable sunroofs, and fewer than 30 vehicles were recalled for loose engine bolts. So, while we wouldn’t call the 2025 year bad, on paper, it isn't quite up there with the 2026 model. However, that has to be considered in the context of the K4's youth.
Is a used Kia K4 a good deal?
The Kia K4 has been holding its value well so far. CarGurus pricing data shows that the average price for a used 2025 or 2026 model is about $22,000, while pricing for a new K4 ranges from about $23,000 to $30,000. However, comparing apples to apples, that $22,000 price is less than shoppers would pay for an equivalent Toyota Corolla or Honda Civic. The K4 comes with a 10-year/100,000-mile limited powertrain warranty, which is one of the best in the business, but it only transfers to second owners who buy certified pre-owned models. Otherwise, it converts to a five-year/60,000-mile warranty.
Pros and Cons
Pros:
- Excellent cargo space
- Impressive tech features
- Affordable price
Cons:
- Underwhelming powertrains
- Awkward climate control panel on upper trims
- Potentially polarizing design
Kia K4 Generations
Kia K4 First Generation (2025-Present)
The Kia K4 was all-new in the United States for the 2025 model year, replacing the Forte, which was discontinued after the 2024 model year. In addition to having a more fastback sedan design, the K4 is longer and wider than the Forte, prioritizing passenger space with an extra three inches of rear legroom. It also has more modern styling and the most up-to-date tech, including wireless Apple CarPlay and Android Auto.
The K4 carries over the base 147-horsepower 2.0-liter four-cylinder engine and continuously variable transmission from the Forte, but the 1.6-liter turbocharged engine has been tweaked. It delivers 11 less horsepower in the K4 (190 hp vs 201 hp), and it is paired with an eight-speed automatic transmission, rather than the Forte's seven-speed dual-clutch unit.
The Kia K4 has five trims: LX, LXS, EX, GT-Line and GT-Line Turbo. The only trim to get the top-tier turbocharged engine is, as expected, the GT-Line Turbo. One of the K4's main selling points is the plethora of standard features with the base LX trim, including a 12.3-inch infotainment screen, adaptive cruise control, wireless Apple CarPlay and Android Auto integration, automatic emergency braking, lane-keep assist, high-beam assist, 60/40 split folding rear seats, LED daytime running lights, LED taillights, and front and rear USB-C charge ports.
We’d steer shoppers toward the EX trim, which offers a good mix of upscale equipment without a hefty price tag. This includes the chic dual 12.3-inch displays for the cluster and infotainment screen, synthetic leather seats, dual automatic climate control, a wireless phone charger, 17-inch alloy wheels, and heated front seats. For those who want sportier handling but don’t need the extra power, the GT-Line adds a multi-link rear suspension and sportier chassis as well as 18-inch wheels, a performance-themed exterior, and more premium interior trimmings. For more power and maximum spec—including LED projector headlights and a Harman Kardon audio system—buyers should go for the GT-Line Turbo.
Another plus point for the K4 is safety. Both the Insurance Institute for Highway Safety (IIHS) and the NHTSA gave it top marks in testing, and the IIHS even gave late 2025 and 2026 model years a Top Safety Pick+ designation. However, K4s built before February 2025 had a Poor result in the updated moderate-overlap test, while vehicles built after January 2025 received the later rating. Standard safety equipment includes automatic emergency braking with pedestrian detection, lane-keep assist, adaptive cruise control, rear-occupant alert, driver attention warning, and a rear-view camera with dynamic guide lines. Available features include blind-spot monitors, rear cross-traffic alert, front and rear parking sensors, a surround-view camera system, and a blind-view monitor in the digital cluster.
The K4 has a few known issues, but nothing catastrophic. Some 2025 models have been recalled for an instrument panel failure, which is fixed with an over-the-air update, and a very small number of 2025 K4s have been recalled because of loose engine bolts. Outside of that, some 2026 models have been recalled for seat belts that may not latch in the second row and there are a couple technical service bulletins circulating for 2025 models to fix the sunroof operation logic and some Kia Connect activation failures.
CarGurus pricing data at the time of writing put the average price of a used Kia K4 at $21,691. There’s a variance of about $800 between the 2025 and 2026 model years, ranging from $21,626 to $22,485.
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