The engine knocks, the oil light flickers, and that bargain Seltos needs a tow. In certain 2021–2023 2.0L models, faulty piston oil rings can damage cylinder walls and increase oil use. Keep running with that damage, and the engine can seize. Kia’s SC336 recall covers 53,635 U.S. Seltos vehicles.
Sorting the Kia Seltos years to avoid takes more than checking the badge and asking about mileage. Engine choice, recall eligibility, and repair records can change the risk behind the same asking price. This guide separates the trouble years, explains each powertrain’s faults, and shows what to check before buying.
1. Which Seltos years carry the biggest repair risks
Start with 2021, but don’t clear 2022–2023 without checking
2021 deserves the most scrutiny, especially with the 2.0L engine and gaps in its repair history. Certain vehicles face piston-ring recalls, while some 2021 IVTs have separate campaign or repair guidance. These documented issues can lead to engine damage, delayed acceleration, or loss of drive, but they do not establish that every covered vehicle will fail.
That ranking reflects overlapping documented issues, not a measured failure rate. Recall coverage does not mean every listed engine will fail, and a newer registration date does not prove that revised parts are installed. Check the VIN and actual repair history before drawing conclusions about an individual car.
| Model year | Buying position | Main distinction |
|---|---|---|
| 2021 | Highest scrutiny, especially with missing repair records | Certain 2.0L engines fall under piston-ring recalls. Some IVTs and turbo DCTs have separate campaigns or service actions. |
| 2022 | Check engine-recall status and ignition equipment | Certain 2.0L engines fall under SC336. Some key-start vehicles may qualify for theft-deterrent updates. |
| 2023 | Check the engine and production batch | Certain 2.0L engines fall under SC336. Some vehicles also fall under the electric oil-pump controller recall. |
| 2024 | Consider the turbo, with VIN-specific recall checks | The turbo gains an 8-speed automatic. Certain vehicles face oil-pump or curtain-airbag recalls. |
| 2025–2026 | Newer candidates with less long-term history | The 2.0L retains the IVT; the turbo uses an 8-speed automatic. |
| 2027 | Assess as a new generation | The redesigned generation was on sale in 2026. Its gas engines carry over, but long-term vehicle-level reliability remains unproven. |
An April 2022 build date doesn’t clear the engine
SC336 covers certain 2021–2023 Seltos with the 2.0L engine built through July 1, 2022. That leaves some vehicles built after April 2022 inside the production window. A later build date within that range does not prove the engine has different piston rings.
The door-jamb label can help narrow the search, but Kia identifies affected vehicles by VIN. The recall population does not follow a simple VIN sequence. Have a Kia dealer check campaign eligibility and completed work against the exact VIN.
Read the repair entry closely. An inspection, a monitoring-software update, and an engine replacement are different jobs. Ask whether the original engine remains and whether oil loss or knocking continued after the visit.
Complaint counts can’t measure your odds
Owner reports can identify symptoms worth checking, such as engine knock or revs rising without matching road speed. Raw complaint counts do not show how many comparable vehicles remain on the road. They also do not control for mileage, service history, or differences in whether owners report a problem.
A quiet test drive cannot measure oil consumption across hundreds of miles. Scan results, oil-use records, and an engine inspection add evidence that a short drive misses. Treat unresolved knocking, oil loss, or transmission slipping as reasons to pause the purchase until a mechanic diagnoses the cause.
2. Check the gearbox behind the “automatic” label
A used Seltos listing may say “automatic” without naming the gearbox. That hides an important difference. Kia paired the 2.0L engine with its Intelligent Variable Transmission, or IVT. Early 1.6L turbo models used a 7-speed dry dual-clutch transmission, or DCT.
The IVT is a continuously variable transmission. It varies its ratio through a chain and variable-width pulleys rather than shifting through fixed gears. The DCT uses two clutches to engage separate gear sets. Its clutches slip briefly during some low-speed starts, which creates heat.
| U.S. model years and engine | Transmission | What needs attention |
|---|---|---|
| 2021–2023 2.0L MPI | IVT | Certain engines fall under piston-ring recalls. Some 2021 IVTs have a separate campaign and repair guidance. |
| 2021–2023 1.6L turbo GDI | 7-speed dry DCT | Check clutch engagement and applicable control-software updates. Repeated severe judder needs diagnosis but does not, by itself, prove a known defect. |
| 2024–2026 2.0L MPI | IVT | The refresh kept this gearbox. Not every refreshed Seltos has an 8-speed automatic. |
| 2024–2026 1.6L turbo GDI | 8-speed automatic | A torque converter replaces the earlier dry DCT’s clutch-based pull-away arrangement. |
Match the fault to the engine
The 2.0L piston-ring recalls do not establish the same defect in the 1.6L turbo. Likewise, dry-clutch heat and judder belong in the early turbo’s transmission diagnosis. Mixing those faults can lead you to reject the wrong car or miss the right inspection.
Fuel delivery differs, too. The 2.0L uses multipoint injection, which sprays fuel into the intake ports. The turbo uses gasoline direct injection, which sprays fuel into the cylinders. Engine size and injection type help confirm which powertrain the paperwork describes.
Verify the hardware before the test drive
Check the original window sticker or ask Kia to identify the factory powertrain from the VIN. Trim names changed during the model run, so a trim badge alone may not settle the question. Match the factory record with the engine and transmission listed on repair invoices.
On an IVT road test, watch for delayed drive or revs rising without matching acceleration. With an early turbo DCT, check ordinary pull-away and low-speed shifts for repeated severe judder. A 2024–2026 turbo’s 8-speed automatic avoids the earlier dry-clutch design, but that change does not establish the condition of an individual gearbox.
3. How faulty piston rings can damage the 2.0L engine
The damage starts where the piston meets the cylinder
Piston oil rings scrape excess oil from the cylinder walls. In the original SC209 recall, inconsistent heat treatment made certain rings too hard. Their edges could chip and score the cylinder bores.
Damaged bores can let more oil enter the combustion chamber and burn. The dipstick level may fall without a puddle beneath the car. If oil becomes too low, bearings can lose lubrication, knock, and fail. Continued operation can lead to engine seizure and loss of power.
The fire risk described in SC209 follows a further failure; severe bearing damage can let a connecting rod puncture the engine block. Oil may then escape onto hot exhaust parts and ignite. Do not assume that every SC336 vehicle has experienced this entire failure sequence; SC336 describes a later piston-ring quality issue and the risk of cylinder-wall damage.
An old recall invoice may leave another campaign unfinished
SC209, filed as NHTSA recall 21V-259, covers certain 2021 Seltos with the 2.0L engine. Its production window runs from November 20, 2019, through October 15, 2020. A completed repair under that campaign does not establish the status of the later recall.
SC336, filed as NHTSA recall 25V-099, covers certain 2021–2023 2.0L Seltos. Its production window runs from July 2, 2020, through July 1, 2022. The windows overlap, so ask Kia to check both campaigns against the VIN.
The later filing identifies piston rings that can damage cylinder walls over time. Do not assume the original engine received new rings because the seller has a recall invoice. The work may have involved inspection and software alone.
Software can detect damage, but it can’t repair it
SC336 calls for an engine inspection, engine replacement when required, and Piston Ring Noise Sensing System software. Kia later revised the inspection procedure after false-positive concerns. The revised procedure checks the engine warm; unusual noise or an unclear result may require further technical review.
The software monitors for noise associated with piston damage. It can flag a problem, but it cannot restore scored cylinder walls or damaged bearings. Kia provides required recall work at no charge. After the SC336 repair, Kia’s instructions call for engine replacement at no cost if the system sets P1327, the piston-noise detection code. Other diagnostic situations may require dealer review.
A completed software entry therefore does not prove that the engine will never need replacement. Ask for the inspection result, software entry, and any later repair records.
Find out what happened after the repair
Ask for the inspection result, software entry, and engine-replacement invoice, where applicable. An engine replacement should appear as a specific repair, not a vague “recall completed” note. Check whether later visits mention continued oil loss, knocking, or another warning light.
A seller who keeps topping up the oil may hide the rate of loss during a viewing. Service records showing mileage and oil added give the mechanic more to assess. A single full dipstick reading cannot establish normal oil use.
If the engine knocks, loses power, or shows an oil-pressure warning, stop safely and shut it off. Arrange a tow rather than continuing the test drive. Running with low oil pressure can turn cylinder damage into bearing failure and seizure.
4. When the IVT revs but the Seltos won’t pull
A delayed launch can point to an unfinished campaign
Press the accelerator and the engine revs while road speed barely rises. The car may hesitate before pulling away, sometimes with a warning light on the dash. On certain 2021 Seltos, those symptoms warrant checking SC199, Kia’s voluntary emissions service campaign.
SC199 applies to certain 2021 Seltos built from November 20, 2019, through April 10, 2020. It calls for a transmission-control software update and IVT replacement when needed. A software update alone will not repair worn or damaged gearbox parts. Ask which work the dealer performed and whether the symptoms returned.
Kia issued another SC199 owner reminder on February 19, 2026, for affected vehicles still awaiting repair. The required campaign work is offered at no charge. A standard warranty expiration does not by itself end that inquiry, but the dealer must check the VIN and campaign status.
Fault codes help separate a control fault from gearbox damage
Bulletin TRA102 covers certain 2021 Seltos built from November 20, 2019, through March 21, 2021. It addresses IVT diagnosis and repair involving several transmission codes. Each code identifies a fault the controller detected, but none alone proves the underlying cause.
| Fault code | What it flags | Why it matters |
|---|---|---|
| P0730 | Incorrect gear ratio | The measured ratio does not match the expected ratio. |
| P0731 | Incorrect first-gear ratio | The controller detects a mismatch during low-ratio operation. |
| P0741 | Torque-converter clutch performance or stuck off | The lockup clutch does not behave as commanded. |
| P0867 | Transmission-fluid pressure | The controller detects a pressure-related fault. |
Kia’s repair path can include IVT replacement alongside required control updates. The replacement procedure includes resetting adaptive values, entering oil-pressure characteristics, completing adaptive relearning, and verifying the process with Kia’s diagnostic system. For the Seltos, the bulletin also requires flushing the transmission cooler. Look for these entries on a replacement invoice; “new transmission” alone does not confirm the required setup was completed.
Clearing codes does not establish that the original fault has stopped. Ask for the diagnosis and repair details, not just a list of codes.
Check the pull before and after the gearbox warms
During an ordinary road test, compare pull-away response before and after the IVT warms. Watch for delayed engagement, repeated surging, or revs rising sharply without matching acceleration. Note whether the behavior changes with light throttle or moderate load.
An IVT can hold steady engine revs while the car gains speed. That behavior alone does not establish slipping. A repeatable loss of pull, especially with a warning light or stored ratio code, needs diagnosis.
Do not extend the test drive once the car loses drive or struggles to enter traffic. Stop safely and have the fault assessed. A control-software update cannot restore damaged pulley surfaces or a worn chain.
5. The early turbo’s dry clutches need a closer look
Slow traffic can put heat into the clutches
The 2021–2023 1.6L turbo uses a 7-speed dry dual-clutch transmission. Its clutches slip briefly as the car pulls away. You may feel that engagement more clearly than in a conventional automatic with a torque converter.
Repeated severe judder, harsh engagement, or lost drive needs investigation. Those symptoms do not establish a defect in the turbo engine itself, and normal clutch engagement alone does not prove a transmission fault.
Prolonged creeping or holding the car on a hill with the accelerator can add clutch heat. Use the brake to hold position. If an overheating warning appears, follow the cooling instructions in the owner’s manual for that vehicle.
During a test drive, check ordinary pull-away, parking moves, and shifts through slow traffic. Note whether shaking repeats after the gearbox warms. Do not deliberately provoke an overheating warning. A normal road test should reveal how the clutches engage without adding needless heat.
Some 2021 shifting faults need a control update
Kia issued SA454, under bulletin TRA094, for certain 2021 Seltos with the 1.6L turbo and 7-speed DCT. The bulletin’s production window runs from November 20, 2019, through October 14, 2020. It addresses limited shifting or limp-home operation linked to a control-logic fault. The bulletin’s ROM information is specific to the listed configuration, so do not assume every 2021 turbo is included.
The associated code, P060194, identifies an internal control-module memory checksum error. In simple terms, the controller detects a fault while checking stored data. Kia prescribes a DCT control-logic update for affected vehicles.
Ask a Kia dealer to confirm whether the service action applies and whether the car received it. Match the repair record to the VIN. A receipt for an unrelated engine or infotainment update does not establish completion.
Updated software doesn’t prove the clutches are sound
A completed SA454 update addresses the specified control fault. It does not establish the condition of the clutch friction surfaces or engagement hardware. Persistent judder still needs its own diagnosis.
Ask whether previous repairs involved software, clutch replacement, or another transmission part. Record when the fault appears, including cold starts, warm pull-away, or reverse engagement. A control update cannot replace worn clutch friction material.
6. A key-start Seltos can cost more to insure and protect
Check what stops the engine from starting
Certain 2021–2022 Seltos built from November 21, 2019, through February 28, 2022, may lack an engine immobilizer. An immobilizer checks for an authorized key before allowing the engine to run. Without one, the vehicle lacks that key-based layer of theft protection.
A key-start ignition alone does not establish the car’s equipment or campaign eligibility. Ask Kia to check the VIN and confirm the applicable equipment and campaign status. Push-button and keyed models should not receive the same blanket assessment.
Kia’s CS2309 campaign adds theft-deterrent control logic to eligible vehicles; it does not install a conventional engine immobilizer. Kia’s instructions say to lock and unlock with the key fob to activate and deactivate the software-based protection. Ask the dealer for the operating instructions that match the installed update.
A window decal does not prove which software the car received or whether it works correctly. Get the completed campaign entry and confirm that the supplied fobs operate the locks. Ask the dealer to verify the software and explain the required arming routine.
A later campaign adds a physical ignition guard
Kia issued CS2312 for an ignition-cylinder protector in December 2025; the current bulletin revision is dated June 2026. It covers eligible vehicles, including certain Seltos, that received an earlier anti-theft software update. Have Kia check whether the car qualifies and whether the protector was installed.
The protector adds a physical barrier around the ignition cylinder. It does not guarantee protection against theft or damage during an attempt. Completion of CS2309 alone does not establish eligibility for or completion of CS2312.
Get the insurance price before settling on the car
Request an insurance quote using the exact VIN before agreeing to the purchase price. Confirm that the insurer will provide the coverage you need. A lower sale price can lose its appeal once the premium and deductible enter the calculation.
Inspect the steering-column trim, ignition cylinder, and surrounding wiring for signs of a past theft attempt. Ask for repair invoices if the trim looks damaged or recently replaced. A new plastic shroud does not establish that the ignition housing and wiring underneath received proper repairs.
7. Later models have two separate safety recalls to check
The electric oil-pump controller can overheat
SC275, filed as NHTSA recall 23V-531, covers certain 2023–2024 Seltos with the IVT. The affected production window runs from November 9, 2022, through May 29, 2023. The fault involves the electric auxiliary oil-pump controller associated with Idle Stop & Go.
A damaged capacitor inside the controller can cause an electrical short and thermal damage, increasing the risk of fire. This recall concerns electrical damage at the transmission’s auxiliary pump, separate from the piston-ring engine recalls. A fire is a risk, not an inevitable outcome.
Kia’s remedy involves inspecting the assembly and replacing the controller when required. Until the repair is complete, Kia directs owners to park outside and away from structures. Switching off stop-start at the dashboard does not complete the repair; follow Kia’s parking instruction until a dealer confirms the recall work is done.
The curtain-airbag recall covers certain 2024 Seltos
SC289, filed as NHTSA recall 23V-830, covers certain 2024 Seltos and a separate population of 2023 Kia Soul vehicles. Kia’s repair bulletin lists Seltos vehicles built from April 3 through May 15, 2023. The original NHTSA filing lists an earlier end date for the Seltos population, so verify eligibility by VIN rather than relying on a build date alone.
A manufacturing weld defect in the curtain-airbag inflator can cause unintended deployment. The curtain airbag runs along the side windows to help protect occupants during certain crashes. This defect can make it deploy when no crash calls for it.
Kia instructs dealers to inspect both curtain-airbag modules and replace affected parts as needed. An inspection-only repair can be correct when both modules pass the prescribed check. Ask for the VIN-specific inspection result and any replacement entries; an invoice that merely says “inspected” does not confirm that both modules passed.
8. The warranty may end sooner than the listing suggests
A used Seltos doesn’t automatically keep 10 years of powertrain coverage
A listing that advertises Kia’s 10-year/100,000-mile powertrain warranty needs a closer look. For an ordinary subsequent owner, that original-owner powertrain coverage does not transfer. Kia’s 2021 warranty manual identifies remaining 5-year/60,000-mile basic coverage for later owners, subject to component-specific terms and exclusions.
The clock starts when the vehicle first enters service, not when you buy it used. Coverage ends when either the time or mileage limit arrives first. A low-mileage 2021 Seltos can therefore exceed the time limit despite showing fewer than 60,000 miles.
There are exceptions and separate terms. Kia’s manual provides an exception when the original lessee buys the vehicle at lease-end, and excludes commercial-service vehicles from the original-owner 10/100 powertrain coverage. A qualifying Kia Certified Pre-Owned purchase can have separate powertrain and Platinum coverage; that CPO powertrain clock still runs from the original in-service date. Ask for the actual Kia certification and warranty documents. A dealer’s own “certified” label does not establish enrollment in Kia’s program.
“No open recalls” leaves gaps in the repair history
NHTSA’s VIN lookup shows unrepaired safety recalls. It does not show completed recalls or nonsafety service campaigns. A clean result therefore does not tell you whether the car received SC199, SA454, or the theft-deterrent updates.
Ask a Kia dealer to check the VIN-specific campaign status, including completed work, and request available completion records or repair invoices. Public lookup pages do not guarantee a complete history of every past campaign repair. Check emissions campaigns and service actions separately from safety recalls. An expired standard warranty does not automatically rule out free work under an applicable campaign.
Read what the repair actually included
An engine inspection, software update, and engine replacement represent different work. The same applies to an IVT update versus a replacement gearbox. Ask for invoices that identify the work performed and the mileage at each visit.
Later repair entries matter when the same symptom returns. Repeated visits for knocking, oil loss, or slipping can leave a fault unresolved despite an earlier campaign entry. Have a mechanic assess the current fault rather than relying on the seller’s description of past repairs.
For work outside confirmed coverage, obtain a written diagnosis and an installed repair quote. Compare that total with the price of a comparable Seltos without the unresolved fault. Confirmed coverage must apply to the specific repair, not merely to the vehicle.
9. What the newer Seltos changes under the hood
The 2024–2026 turbo drops the dry DCT
The 2024 refresh replaced the turbo’s 7-speed dry DCT with an 8-speed conventional automatic. Turbo output rose from 175 hp to 195 hp for 2024. Kia lists 190 hp for the 2025–2026 turbo models. The 2.0L engine kept its IVT, so this gearbox change applies only to the turbo.
The 8-speed uses a torque converter when pulling away. That removes the earlier DCT’s dry-clutch arrangement for low-speed starts. For buyers who disliked the early turbo’s clutch engagement, this is a concrete reason to consider the newer version.
The turbo still uses direct injection and turbocharging, with their own service needs and repair costs. Check oil-change records and assess the engine and gearbox during a road test. The transmission change alone does not prove lower lifetime repair bills.
A newer build has less history to judge
The SC209 and SC336 piston-ring recall populations do not extend into 2024–2026 Seltos. That changes their recall exposure. It does not establish that every possible engine or transmission fault disappeared.
The 2025–2026 models also have fewer years of use behind them. Low complaint counts can reflect age and mileage rather than proven durability. Neither a quality score nor a short repair history establishes how the drivetrain will perform at high mileage.
For a 2024 model, keep the oil-pump and curtain-airbag recall checks separate from the engine assessment. Those campaigns cover specific production groups. A newer powertrain does not remove the need to confirm repairs against the VIN.
Treat the 2027 redesign as a separate purchase
The 2027 Seltos is a redesigned second-generation model. Its U.S. gasoline versions were on sale by 2026, and Kia says the 2.0L and 1.6L turbo engines carry over. The 2.0L pairs with an IVT, while the turbo uses an 8-speed automatic. Earlier evidence about those components may be relevant, but it cannot establish the reliability of the redesigned vehicle as a whole.
The first Seltos hybrid is a new powertrain and was still described by Kia as coming soon. Its long-term durability, like the redesigned model’s, is not yet established by a long service history.
Do not carry a “best year” label forward simply because the Seltos name remains. Check the exact engine, transmission, warranty terms, and any campaigns that apply to the vehicle. Long-term wear and gearbox life for a newly introduced generation remain uncertain.
Sources & References
- NHTSA Safety Recall Report 21V-259 – Kia Seltos piston oil rings
- NHTSA Safety Recall Report 25V-099 – Kia Seltos and Soul piston rings
- Kia SC336 dealer bulletin – piston-ring recall procedure
- Kia SC336YZ subsequent repair action bulletin
- NHTSA ODI closeout – Kia 25V099 recall effectiveness
- Kia SC199 campaign notice – IVT service campaign
- Kia SC199 owner reminder dated February 19, 2026
- Kia TRA102 – IVT diagnosis and repair bulletin
- Kia TRA094 and SA454 – DCT control-logic update
- Kia 2021 Seltos U.S. specifications
- Kia 2022 Seltos U.S. specifications
- Kia 2023 Seltos U.S. specifications
- Kia announcement – refreshed 2024 Seltos powertrain updates
- Kia 2025 Seltos U.S. specifications
- Kia 2026 Seltos U.S. specifications
- Kia CS2309 – anti-theft software campaign bulletin
- Kia CS2312 Revision 2 – ignition-cylinder protector bulletin
- NHTSA announcement – Hyundai and Kia theft-prevention campaigns
- NHTSA Safety Recall Report 23V-531 – electric oil-pump controller
- Kia SC275 recall questions and answers
- NHTSA Safety Recall Report 23V-830 – curtain-airbag inflators
- Kia SC289 – curtain-airbag recall inspection bulletin
- 2021 Kia Warranty and Consumer Information Manual
- Kia U.S. warranty information
- Kia Certified Pre-Owned coverage and benefits
- NHTSA recall lookup
- Kia owner recall and campaign lookup
- NHTSA vehicle safety complaints and reporting information
- Kia announcement – all-new 2027 Seltos
- Kia announcement – introduction of the 2027 Seltos
- Kia U.S. 2027 Seltos model page
- Kia U.S. Seltos family and hybrid information