TECHNICAL SERVICE BULLETIN: TRANSMISSION FLUID APPLICATION GUIDE - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information relating to the correct transmission fluid type and fill quantity requirement for each Kia model. A flush is required ONLY when a transmission is replaced, and the transmission oil cooler is transferred to the new transmission.
full bulletin at NHTSA ↗2023 Kia Sorento powertrain problems
severe 17 complaints filed with NHTSA · avg repair $2,500 · see powertrain across all vehicles →
Complaints
17
Recalls
0
Avg fix
$2,500
1crash
When does it fail?
Of the 17 powertrain complaints filed for the 2023 Kia Sorento, here's the actual mileage breakdown — failures cluster heaviest at 0-25,000 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.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering powertrain 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.
TECHNICAL SERVICE BULLETIN: 8-SPEED DUAL CLUTCH TRANSMISSION EOP SENSORLESS LOGIC IMPROVEMENT - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information to improve the Electric Oil Pump ‘EOP’ operation logic of the automatic transmission ‘A/T’ on some 2021-2023MY Sorento (MQ4a) vehicles produced from September 9, 2020 through December 29, 2023 and 2021-2023MY K5 (DL3a) vehicles produced from March 24, 2020 to December 18, 2023, equipped with a 2.5L T-GDI Theta III engines and 8-Speed Dual Clutch Transmissions (DCT). The affected vehicles may exhibit abnormal/hars
full bulletin at NHTSA ↗TECHNICAL SERVICE BULLETIN: 8-SPEED DUAL CLUTCH TRANSMISSION EOP SENSORLESS LOGIC IMPROVEMENT - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information to improve the Electric Oil Pump ‘EOP’ operation logic of the automatic transmission 'A/T’ on some 2021-2023MY Sorento (MQ4a) vehicles produced from September 9, 2020 through December 29, 2023 and 2021-2023MY K5 (DL3a) vehicles produced from March 24, 2020 to December 18, 2023, equipped with a 2.5L T-GDI Theta III engines and 8-Speed Dual Clutch Transmissions (DCT). The affected vehicles may exhibit abnormal/hars
full bulletin at NHTSA ↗TECHNICAL SERVICE BULLETIN: 8-SPEED DUAL CLUTCH TRANSMISSION EOP SENSORLESS LOGIC IMPROVEMENT - This bulletin provides information to improve the Electric Oil Pump ‘EOP’ operation logic of the automatic transmission ‘A/T’ on some 2021-2023MY Sorento (MQ4a) vehicles produced from September 9, 2020 through December 29, 2023 and 2021-2023MY K5 (DL3a) vehicles produced from March 24, 2020 to December 18, 2023, equipped with a 2.5L T-GDI Theta III engines and 8-Speed Dual Clutch Transmissions (DCT).
full bulletin at NHTSA ↗This bulletin provides information relating to the correct transmission fluid type and fill quantity requirement for each Kia model. A flush is required ONLY when a transmission is replaced.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners of the 2023 Kia Sorento report a pattern of powertrain failures starting in early ownership. The most common complaint is transmission limp mode: vehicles suddenly reduce speed to around 20 mph regardless of accelerator input, trapping drivers on highways and at intersections. This has occurred as early as 3,000 miles.
Transmission shuddering during shifts, particularly in lower gears, is reported by multiple owners as progressively worse and dangerous at highway speeds. Several owners describe the transmission getting stuck in first or second gear with full throttle producing no effect—only a restart clears it. One owner had a refurbished transmission installed at under 10,000 miles; the same failure pattern returned by 22,000 miles.
Complete electrical shutdowns occur without warning—engine dies, screens go black, and the vehicle won't restart for several minutes. These events happen at red lights and highway speeds with no battery or system warning beforehand. Sudden engine stalls at 70 mph have forced emergency exits.
Dealerships have cleared diagnostic codes but taken no corrective action, claimed they cannot duplicate the problem despite flight-recorded evidence, or told owners the failures are normal. One dealership found a transmission filled below factory specification from the factory; refilling temporarily fixed symptoms, which returned within a month. Kia Corporate engineers have been involved in at least one case, but a technician acknowledged they've seen this pattern without issuing a recall.
Same Kia Sorento powertrain reports on nearby years: 2020 · 2022 · 2025
Failure modes owners describe
Transmission limp mode / loss of acceleration
Vehicle enters limp mode or sharply reduces speed to 20 mph or lower, sometimes without warning. Owners report inability to accelerate past this speed even with accelerator fully depressed, creating hazardous situations on highways and at intersections. Occurs during highway driving, acceleration attempts, or lane changes.
When: Various; reported between 3,000–22,000 miles. One case at 3,000 miles in early ownership.
Symptoms owners cite: Sudden inability to exceed 20 mph despite depressing accelerator; Vehicle locked in limp mode on highway at 70 mph, forcing unsafe coasting to exit; Loss of acceleration power when merging or passing; Check engine light or transmission warning light illuminated; Engine management system error displayed on diagnostics
Codes mentioned: P065312, Input turbine shaft speed sensor B circuit range for performance
Repairs/costs cited: Dealerships unable to recreate problem or provide permanent fix. One case cleared code with no further action. Another involved full transmission replacement.
Recalls/TSBs owners mention: Kia Corporate engineers involved in early 2023 case; California Kia unresponsive when issue could not be duplicated. No recall issued despite technician acknowledgment of pattern.
Transmission shudder and rough shifting
Pronounced shuddering during gear shifts, particularly in lower gears. Shuddering worsens over time and is accompanied by harsh or delayed shifting, erratic RPM readings, and lack of power during acceleration. Reported as dangerous and similar to known 2021 DCT transmission recall issues.
When: Starting around 3,000 miles; worsening by 4,000 miles. One fleet-transmission issue at under 10,000 miles requiring replacement.
Symptoms owners cite: Distinct shudder when shifting through lower gears; Shudder grows worse over time; Intermittent problems at highway speeds; Harsh and delayed shifting; Erratic RPM readings; Hesitation and near-stalling on acceleration or uphill
Repairs/costs cited: Dealership flight-recorded and acknowledged transmission failure but sent customer home three times with no diagnosis. One transmission replaced with refurbished unit at under 10,000 miles; same issue recurred at 22,000 miles with speed sensor fault.
Complete electrical shutdown without warning
Vehicle experiences sudden and complete electrical shutdowns while driving or stopped, with all systems going dark. No warning lights or battery indicators precede these events. Vehicle requires restart or waiting several minutes parked before it will restart. Creates immediate safety risk of being stranded in traffic.
When: December 2024 and December 2025 in one documented case; also reported at 6,776 miles in another.
Symptoms owners cite: Engine shuts off entirely while stopped at red light; All screens go black; Vehicle fails to restart immediately; No warning lights or system alerts before shutdown; Vehicle restarts only after parked several minutes; Engine shutdown light illuminates after restart
Recalls/TSBs owners mention: Kia Corporate engineers involved in one case; repairs in July/August 2025 did not prevent recurrence in December 2025.
Transmission low fluid / improper fill from factory
Transmission filled below specification at factory, causing transmission warning light, bucking, stalling, and improper shifting. Dealership diagnosis and refill temporarily resolved issue, but same symptoms returned within one month.
When: Early ownership; recurrence one month after fluid refill.
Symptoms owners cite: Transmission warning indicator on dashboard; Vehicle bucking and stalling; Improper or erratic shifting; Erratic vehicle behavior creating safety issues
Repairs/costs cited: Dealership diagnosed transmission fluid extremely low and below factory specification. Refilled to proper level; issue recurred one month later.
Transmission gear stuck or DCT stuck in first/second gear
Transmission gets stuck in first or second gear with engine revving to high RPM. Unable to shift out of stuck gear despite full throttle input. Only temporary fix is shutting off and restarting vehicle. Occurs at intersections and highway on-ramps, creating near-accident situations.
When: Multiple occurrences; not clearly dated in reports.
Symptoms owners cite: Transmission stuck in first or second gear; Engine revs all the way up without vehicle moving; Accelerator pedal to floor has no effect on shifting; Unsafe situation at intersections and highway merges
Repairs/costs cited: Temporary fix: turn vehicle off and restart to release stuck gear.
Sudden engine stall and loss of power while driving
Engine dies unexpectedly while driving at highway speed or during normal operation. Vehicle loses all power and dashboard warning lights illuminate. Vehicle may fail to restart or require lengthy restart time.
When: At highway speed (70 mph in one case); also reported at 6,776 miles.
Symptoms owners cite: Engine dies without warning while driving; All dashboard lights illuminate; Unable to accelerate; vehicle loses power; Check engine light and engine management system warning displayed; Vehicle may require jump start or extended wait time to restart
Codes mentioned: Engine Control System issue (general)
Repairs/costs cited: One case: dealership found code P065312 in history, cleared it, but found no issues on test drive and took no action.
Transmission failure requiring replacement
Transmission fails completely, requiring full replacement. Occurs at relatively low mileage in early ownership. In at least one case, replacement was performed with refurbished unit, which subsequently failed again.
When: Under 10,000 miles in one case; 12,000 miles in another; 22,000 miles after previous replacement.
Symptoms owners cite: Transmission warning light; Loss of drive engagement or inability to shift; Vehicle unable to move forward
Repairs/costs cited: Full transmission replacement performed. At least one replacement used refurbished unit; same failure mode recurred.
Recalls/TSBs owners mention: Warranty coverage provided for replacement in at least one documented case.
Unresponsive accelerator / failure to accelerate
Accelerator pedal depressed but vehicle fails to move forward or accelerate as intended. Occurs while parked with vehicle in drive gear and foot on accelerator. No warning lights indicate the problem. Multiple occurrences in a single month for one owner.
When: Approximately 21,700 miles in one documented case; multiple times within one month.
Symptoms owners cite: Accelerator pedal depressed but vehicle fails to move; No warning lights illuminated; Failure to accelerate occurs more than five times in one month; Previous repair did not resolve issue
Repairs/costs cited: Not diagnosed or repaired by dealer. Dealer claimed failures were normal function of vehicle.
Dashboard sensor malfunction and electrical errors
Various dashboard sensors malfunction, triggering flashing lights, error messages, and system faults. Issues include false AEB emergency brake activation, air conditioning malfunction, and multiple unrelated electrical faults displayed simultaneously.
When: July 2023 in one documented case; also reported early in ownership at 6,776 miles.
Symptoms owners cite: Flashing dashboard lights; Multiple error messages and system faults displayed; Air conditioning blows hot air despite being off; AEB emergency brake system activates without vehicles nearby; Multiple warning and sensor lights illuminate at same time
Repairs/costs cited: Front sensor reportedly damaged; dealership initially denied warranty coverage despite no visible damage. Repairs took nearly four months with Kia Corporate engineer involvement.
Recalls/TSBs owners mention: Kia Corporate engineers involved in diagnosis; dealership verbally indicated many other customers experiencing similar issues.
Synthesized from 17 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 4 most recent
When I start driving, there’s a lot of hesitation like it’s going to stall and it also does this going up hills or mountains? I was on the interstate and there was a line of cars behind me and my car started to hesitate and almost stall, causing all cars behind me to break to not cause a domino effect accident I have reported this to the Kia dealer and knowing that there’s a lot of DCT problems…
Incident #1: [XXX] The vehicle would not accelerate after coming to a stop at an intersection. The vehicle would not exceed 20 MPH with oncoming traffic from both the East and West as I was turning West from a North Bound Road. On coming traffic was traveling between 45 and 50 MPH. I was clearly nearly broadsided. The car displayed flashing lights on the dash as I was attempting to…
The contact owns a 2023 Kia Sorento. The contact stated that while the vehicle was parked, the gear shifter was shifted into drive, the accelerator pedal was depressed; however the vehicle failed to accelerate as intended. The contact stated that the vehicle failed to move forward. No warning lights were illuminated. The contact stated that the failure had occurred more than five times within a…
Transmission Warning Indicator appears on Dashboard Cluster and vehicle bucks and stalls and won't shift properly. Dealership found Transmission was never filled properly and below specifications according to Kia Service and was verified the fluid level was extremely low and not filled to specification from factory. The dealership filled transmission to proper level and test drove vehicle. Issue…
Had powertrain trouble with your 2023 Kia Sorento?
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 powertrain problem on the 2023 Kia Sorento?
It's a meaningful issue. 17 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $2,500.
At what mileage does the powertrain typically fail?
Based on the 17 complaints filed, powertrain issues most often appear around 16,850 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 $2,500 for powertrain 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 powertrain?
No active recalls currently cover powertrain 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/Sorento.
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.