This bulletin provides information related to the Technical Service Bulletin previously published under SC336 titled “Engine Inspection/Replacement and ECM Logic Improvement”.
full bulletin at NHTSA ↗2023 Kia Seltos engine problems
moderate Owners of the 2023 Kia Seltos have filed 8 NHTSA complaints about the engine at roughly $3,100 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See engine across all vehicles →
Complaints
8
Recalls
0
Avg fix
$3,100
| Model year | engine complaints |
|---|---|
| 2021 Seltos | 184 |
| 2022 Seltos | 31 |
| 2023 Seltos (this page) | 8 |
| 2024 Seltos | 5 |
When does it fail?
Of the 8 engine complaints filed for the 2023 Kia Seltos, here's the actual mileage breakdown — failures cluster heaviest at 75,000-100,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Engine accounts for 18% of all owner complaints filed against this vehicle, across 4 categories tracked.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering engine on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
This bulletin provides instructions to perform an engine vibration inspection using the Kia Diagnostic System (KDS) tablet on certain Kia engine/model vehicles. The piston oil ring(s) in certain Kia engines may, over time, damage the surface of the engine cylinder wall. This may lead to increased oil consumption which will eventually result in abnormal noise from the engine and/or illumination of the oil pressure warning light. The applicable vehicle may or may not have the Piston Noise Sensing System (PNSS) software installed at the time of an engine vibration inspection. The PNSS software may detect engine noise triggering a DTC P132700.
full bulletin at NHTSA ↗TECHNICAL SERVICE BULLETIN: PISTON NOISE SENSING SYSTEM (PNSS) INSPECTION - This bulletin provides instructions to perform an engine vibration inspection using the Kia Diagnostic System (KDS) tablet on certain 2020 - 2023 MY Kia Soul (SK3) 2021 - 2023 MY Seltos (SP2) Kia vehicles equipped with 2.0L Nu MPI Engines. The piston oil ring(s) in certain Kia engines may, over time, damage the surface of the engine cylinder wall. This may lead to increased oil consumption which will eventually result in abnormal noise from the engine and/or illumination of the oil pressure warning light. The applicable vehicle may or may not have the Piston Noise Sensing System (PNSS) software installed at the time
full bulletin at NHTSA ↗TECHNICAL SERVICE BULLETIN SERVICE ACTION: COOLANT RESERVOIR CAP INSPECTION & REPLACEMENT (SA527) - This bulletin provides information to inspect and if necessary, replace the coolant reservoir cap on some 2023MY Seltos (SP2) vehicles produced from October 26, 2022 through November 11, 2022 which may have the incorrect coolant reservoir cap installed. Some vehicles may have had a metal cap installed during assembly.
full bulletin at NHTSA ↗TECHNICAL SERVICE BULLETIN: DATA COLLECTION: EXTRACT CALIFORNIA EMISSIONS DATA FROM ECU (DC23) - This bulletin provides information related to extracting in use performance tracking emissions data from the Engine Control Unit (ECU) of certain vehicles sold in California. The California Air Resources Board (CARB) requires the emissions data from vehicles with a minimum of 3,000 accumulated miles without reprogramming or resetting. To facilitate collection of this data at the dealer level, KDS screenshots will allow the capture of relevant parameters.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
What owners are reporting 3 most recent
We first noticed that the car was sputtering and jerking when accelerating at highway speeds. It wasn't consistent at first but continued to get worse over time and at more regular occurrences. White/grey smoke was spotted from the tailpipe whenever the vehicle was accelerating, either from a stop or when "resuming" on the cruise control. We brought the vehicle in to the dealership as the…
The contact owns a 2023 Kia Seltos. The contact stated that while driving at an undisclosed speed, there was gray smoke coming from the exhaust pipe. The vehicle was taken to the dealer; however, no cause for the failure was found. The vehicle was not repaired. The contact stated that the vehicle stalled on the drive back to the residence. The contact stated that on a separate occasion, while…
The contact owns a 2023 Kia Seltos. The contact stated that while driving at an undisclosed speed, there was while smoke coming from the exhaust, after which the vehicle inadvertently lost motive power. The contact was able to pull over to the shoulder of the roadway, where the vehicle was able to be restarted. The check engine warning light was illuminated. The vehicle was taken to the dealer,…
Had engine trouble with your 2023 Kia Seltos?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the engine problem on the 2023 Kia Seltos?
It's a documented issue but not catastrophic. 8 complaints have been filed. Repairs average $3,100 and most owners catch it before it causes a breakdown.
At what mileage does the engine typically fail?
Based on the 8 complaints filed, engine issues most often appear around 71,000 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2023/Kia/Seltos.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.