2023 Kia K5 Reliability Score & Common Problems

Owners report several structural issues with the 2023 Kia K5, with frequent mentions of rear trim pieces, including chrome covers around the rear windshield, detaching or coming loose, potentially posing road hazards. Complaints often describe trim pieces flying off at highway speeds, and some owners note similar problems with the front bumper clips detaching. Additionally, there are reports of the sunroof glass spontaneously exploding, which could lead to glass scattering on the road or into the cabin. These issues are reported at various mileage points, with one owner noting the problem around 13,500 miles. Safety implications include the risk of these detached components causing accidents or injuries, as indicated by one crash-related complaint.

Owners of the 2023 Kia K5 frequently report severe engine issues, including complete engine shutdowns and explosions. Multiple complaints describe sudden loss of power, with one owner noting the engine sputters and fails to accelerate even after spark plug replacement. Some vehicles experience engine implosions shortly after purchase, with one case occurring at approximately 74 miles. Another owner reports a catastrophic fuel tank explosion that rendered the vehicle unrepairable, posing significant safety risks. These issues often occur within the first few months of ownership, and symptoms include illuminated check engine lights, strange noises, and burning smells, leading to safety hazards such as loss of control and potential collisions.

Owners report issues with the airbag system in the 2023 Kia K5, particularly related to deployment during crashes. Complaints frequently mention airbags failing to deploy in significant collisions, with one owner involved in a head-on collision noting that the airbags did not activate despite substantial damage. Another owner describes a side impact where the side airbag did not deploy, resulting in $18,000 in damages. In a separate incident, an owner reports the front airbag deploying and causing injuries, including chemical burns and a concussion. These complaints involve crashes with injuries, highlighting potential safety implications for buyers considering this model.

Owners of the 2023 Kia K5 report issues with the service brakes, particularly at low mileage. Complaints frequently mention premature brake wear, with one owner needing to replace front brake pads and rotors at only 8,300 miles. Another owner describes a brake pedal locking issue during a tire blowout at approximately 8,500 miles, leading to a temporary loss of braking ability. There is also a report of a crash at around 27,000 miles where the brake pedal went soft, resulting in a collision and minor injury. These reports highlight potential safety implications, including loss of braking control and increased maintenance costs, especially at low mileage.

Owners of the 2023 Kia K5 report issues with the forward collision avoidance system, with symptoms including multiple warning lights activating and a loss of functionality in safety features such as power steering, cruise control, and lane departure alerts. One complaint involves a crash, where the vehicle unexpectedly shifted gears and accelerated while in a car wash, leading to a minor collision without any warning sounds or automatic braking. These issues are reported to occur consistently upon vehicle startup, though specific mileage details are not provided. The safety implications include a loss of critical safety systems and an incident of unintended acceleration, which may be of concern to potential buyers.

Owners of the 2023 Kia K5 report issues with unexpected acceleration when the "Auto Hold" feature is engaged. Complaints frequently mention that when coming to a stop, the engine revs up to around 4 RPMs or higher, requiring drivers to apply the brake forcefully. This issue has been reported in vehicles with mileage ranging from 800 to under 10,000 miles. In some cases, shifting to Park or Neutral temporarily resolves the problem, but concerns about potential accidents are noted if the issue occurs at high speeds. Buyers should be aware of these reports of unintended acceleration, as they pose a potential safety risk.

Owners of the 2023 Kia K5 report issues related to the vehicle's electrical system, particularly involving unexpected loss of power. Complaints frequently mention the vehicle shutting down while driving at highway speeds, with the accelerator failing to respond and brake systems becoming non-functional, creating potential safety risks. Additionally, warning lights, including the check engine light, illuminate along with messages indicating engine control system issues, often leading to an inability to accelerate properly. These problems are reported to occur around 13,000 miles, with some owners noting that despite repairs, the issues persist intermittently, affecting the vehicle's drivability and safety.