Problems · NHTSA complaints
2018 Kia Sportage problems
Owners filed 165 complaints about the 2018 Kia Sportage with NHTSA between May 2018 and Oct 2026. The most-cited component is engine (91).
Complaints
165
Filed with NHTSA
Crashes
7
Reported by owners
Fires
12
Reported by owners
Injuries
5
People reported injured
Deaths
0
Reported to NHTSA
Complaints by component
One complaint can cite several components
- Engine91
- Electrical system30
- Power train18
- Fuel/propulsion system11
- Steering9
- Vehicle speed control8
- Exterior lighting6
- Structure6
- Service brakes6
- Engine and engine cooling5
- Service brakes, hydraulic5
- Seats4
- Visibility/wiper4
- Trailer hitches3
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
Data from NHTSA Complaints API · synced Nov 3, 2026NHTSA vehicle page
When complaints were filed
Does it get worse with age? Complaints per calendar year filed
8
25
9
14
18
25
13
33
20
View as table
| Model year | Complaints filed per calendar year |
|---|---|
| 2018 | 8 |
| 2019 | 25 |
| 2020 | 9 |
| 2021 | 14 |
| 2022 | 18 |
| 2023 | 25 |
| 2024 | 13 |
| 2025 | 33 |
| 2026 | 20 |
Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.
Top problems in owners’ words
Verbatim from NHTSA complaints, newest first
Engine
91 reports9 fires
“The vehicle suffered a primary connecting rod bearing failure covered under the Theta II class action warranty campaign. A brand-new warranty engine long-block was installed by an authorized dealership. Immediately upon vehicle pickup, the brand-new engine began exhibiting an un-metered acceleration defect. While stationary and idling in Park (P), the engine aggressively revs on its own without any operator input on the gas pedal. This malfunction caused the vehicle to violently surge and physically lurch forward several inches while in Park. This un-metered acceleration is an active, unpredictable driving hazard both in parking environments and in traffic, posing an immediate risk of a collision or pedestrian injury. The manufacturer has been notified but has failed to transmit a diagnostic pre-authorization to an alternative service center to safely inspect this powertrain hazard.”
Electrical system
30 reports3 crashes3 fires
“I have spent two months trying to get my keys re-programmed to the system and the dealership informed me that the system has been "bypassed" somehow with no solution. This is after my account had been taken over and at one point the vehicle was being remotely controlled. I am out $500.00 for keys that cant work and this is a safety issue as I cant remotely lock or unlock my own vehicle or use the panic button. There have been people who gained access to the vehicle because somehow they have access to it remotely where I do not. This allowed them to brick the infotainment center and navigation. This is also an issue as this means they cant be utilized.”
Power train
18 reports
“Purchased my Kia on the XXX then on the XXX, My engine light came on and my car went into Safety Mode . I at once took it to Auto Zone and their test came back with P1326 Knock signal range / performance. I then looked it up and found that a recall was put out quite a while back called an [XXX] # took my car to Kia Dealership in [XXX]. They said I could bring it in that was on the XXX and if an appointment came open they would check but they did not have an opening til the 14th which was today and I was told it would be next week . Could someone please send me updated information concerning the 2018 Kia Sportage and the Knock Sensor [XXX] [XXX] [XXX] [XXX] [XXX] [XXX] [XXX]”
Fuel/propulsion system
11 reports3 fires
“Shortly after driving away, before reaching a highway on-ramp, I noticed smoke coming from the vehicle. I turned around and returned to the location. By the time I arrived, the vehicle was emitting black smoke, and shortly after, it was fully engulfed in fire before I could retrieve a fire extinguisher. Vehicle has a documented history of a known manufacturer recall related to an electrical/HECU component and a separate high-pressure fuel pipe recall, both reportedly remedied prior to this incident”
Steering
9 reports3 crashes
“This Kia Sportage's alarm system does not go off when the passenger front window is broken. My car was broken into and the youth stripped the steering column and was able to start my car without needing the key nor having the key within the vehicle. This is a security issue and allows the vehicles to be easily stolen. These safety issues should be address and fixed immediately by Kia. The federal government should also hold Kia responsible for the spike in stolen vehicles across the U.S. seeing they know about the issue but have done nothing to fix it. The vehicle was then crashed and left running by the youth. I have included the estimate from Progressive to get it fixed.”
Vehicle speed control
8 reports
“My 2018 Kia Sportage (VIN [XXX] ) experienced complete engine failure due to low compression/internal combustion chamber failure. The vehicle lost power while driving on Sept 30, 2025, and had to be towed to [XXX] Kia in Dayton, OH. This same dealership previously performed an oil retention test in Aug 2024 which failed, identifying a defective engine. Kia was aware of the issue but declined to replace the engine at that time. The failure pattern matches Kia’s known engine defect. Kia Consumer Affairs (Case #25572677) has denied goodwill assistance despite this safety-related engine failure and prior diagnostic documentation.”
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 3, 2026
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.