MileageCurve What breaks, and at what mileage

Kia Sorento 2021–2025

4th generation (MQ4) · MQ4 · 998 complaints, 103 with mileage

Owners filed 998 complaints with NHTSA about the 2021–2025 Kia Sorento, and 103 of them record the mileage at which the failure happened. That is enough to show not just what fails, but when.

39% of failures fall within the first 12,000 miles. Failures clustered that early usually indicate a design or manufacturing problem rather than wear.

The most-reported areas are the transmission and driveline (22.8% of complaints, typically around 35,500 miles), the engine (16.1% of complaints, typically around 26,000 miles), the electrical system (13.7% of complaints, typically around 24,000 miles).

12 recall campaigns cover this generation.

When failures happen

0–5k: 27 complaints (26.2%)0–5k5–10k: 7 complaints (6.8%)10–20k: 9 complaints (8.7%)10–20k20–30k: 13 complaints (12.6%)30–40k: 13 complaints (12.6%)30–40k40–50k: 6 complaints (5.8%)50–60k: 5 complaints (4.9%)50–60k60–70k: 8 complaints (7.8%)70–80k: 5 complaints (4.9%)70–80k80–90k: 5 complaints (4.9%)90–100k: 1 complaints (1.0%)90–100k100–120k: 2 complaints (1.9%)120–140k: 1 complaints (1.0%)120–140k140–160k: 0 complaints (0.0%)160–200k: 0 complaints (0.0%)160–200k200k+: 1 complaints (1.0%)270

10% of failures occur by 500 miles · a quarter by 4,000 · median 26,000 · three quarters by 55,000 · 90% by 78,000. Based on 103 complaints that record mileage.

What fails, and when

SystemComplaintsShareTypical mileageMiddle half
Power Train22822.8%35,50013,882–66,550
Engine16116.1%26,0002,000–56,941
Electrical System13713.7%24,0006,099–43,000
Unknown Or Other13113.1%
Forward Collision Avoidance484.8%
Fuel/Propulsion System474.7%
Vehicle Speed Control444.4%
Service Brakes383.8%
Visibility/Wiper262.6%
Steering252.5%

By model year

YearComplaintsWith mileage
202135345
202228125
202319617
2024533
202511513

Which systems, and when

Complaints about this generation are not spread evenly across the vehicle, and the systems that generate the most of them do not all fail at the same point in a car's life. The median failure across all systems here is 26,000 miles; the figures below show which parts of the car run ahead of that and which run behind.

The transmission and driveline accounts for 22.8% of complaints (228 reports, 30 of them with a mileage figure), with a median of 35,500 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 13,882 and 66,550 miles.

The engine accounts for 16.1% of complaints (161 reports, 21 of them with a mileage figure), with a median of 26,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 2,000 and 56,941 miles.

The electrical system accounts for 13.7% of complaints (137 reports, 16 of them with a mileage figure), with a median of 24,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 6,099 and 43,000 miles.

Differences between model years

Within this generation, complaint volume is not constant across model years. The 2021 model year drew the most — 353 complaints — while 2024 drew the fewest at 53. The median year sits at 196.

The first year of the generation, 2021, sits above the median. That is a common pattern — early production of a redesigned vehicle tends to surface problems that later years do not repeat — and it is worth weighing when choosing between years.

Recalls and what they cover

NHTSA records 12 recall campaigns covering vehicles in this generation. A recall means the manufacturer or the regulator concluded there was a safety defect or a standard was not met, and that a free remedy is owed to owners — including second and later owners.

The campaigns cluster around the electrical system (3), the engine and its cooling system (2), visibility equipment (1). Repeated recalls against the same area of the car generally mean the first remedy did not fully resolve the underlying problem.

Recall status is specific to the individual vehicle, not the model. Checking a VIN against NHTSA's lookup is free and takes under a minute, and it is the only way to know whether a particular car has had the work done.

Reported severity

Of the 998 complaints filed against this generation, 41 reported a crash; 10 reported a fire; 27 reported an injury. Crash-involved reports represent 4.1% of the total.

These are owner-reported outcomes, not verified investigations, and they are not adjusted for how many of these vehicles are on the road. They are included because the distinction between a fault that strands a car and a fault that causes a collision is the one that matters most, and it is not visible in a complaint count alone.

What this means if you are buying one

For a buyer, an early-failure pattern is comparatively good news on a used example: 39% of the reported failures occur in the first 12,000 miles, which on a car of this age means they have already happened or they were never going to. Service history matters more than mileage here.

On inspection, the transmission and driveline and the engine are where this generation's reports concentrate, so those are the areas worth a specific look. The engine in particular shows a median failure mileage of 26,000, which gives a concrete number to compare against the odometer of any car you are considering.

None of this is a substitute for a pre-purchase inspection on the individual car. Aggregate patterns describe a population; the example in front of you has its own history.

Documented problems

Electrical / fire 2021-2023

Tow hitch wiring harness can allow moisture ingress and short, causing a fire with the vehicle parked and off; subject to recall with an interim park-outside advisory, shared with the Telluride.

Transmission

8-speed wet dual-clutch behind the 2.5T: low-speed shudder and hesitation from a stop.

Recalls (12)

CampaignDateComponent
26V0460002026-03-13Electrical System: Instrument Cluster/Panel
25V6490002026-01-23Visibility:Defroster/Defogger/Hvac System:Fan/Motor
25V5480002025-09-12Engine And Engine Cooling:Critical Fasteners
25V0060002025-02-21Electrical System:Body Control Module:Software
24V2870002024-05-07Electrical System:Wiring
23V6100002023-10-27Back Over Prevention: Sensing System: Camera
23V5790002023-10-10Equipment:Other:Labels
22V7030002023-07-27Trailer Hitches
22V7600002022-12-09Power Train:Automatic Transmission
22V5090002022-07-27Tires:Temporary/Emergency Spare Tire
22V2020002022-04-22Engine And Engine Cooling:Engine:Gasoline:Turbo/Supercharger
21V5190002021-07-21Fuel System, Gasoline:Delivery:Hoses, Lines/Piping, And Fittings

What owners reported

2021 · 375 miles · Vehicle Speed Control
I'VE HAD VEHICLE FOR APPROXIMATELY TWO MONTHS AND TWO DAYS. INTERMITTENT ISSUE WHERE VEHICLE FAILS TO ACCELERATE WHEN MAKING A TURN AFTER STOPPING (NO VEHICLE IN FRONT) OR ACCELERATING FORWARD AFTER A STOP (STOP LIGHT WITH VEHICLE IN FRONT). ISSUE OCCURRED FIRST ON 20 FEB 21 AND AGAIN ON 23 MAR 23. VEHICLE WAS PURCHASED 23 JAN 21. ISSUE SO FAR APPEARS TO OCCUR MONTHLY AROUND THE SAME TIME OF T…
2021 · 500 miles · Forward Collision Avoidance
TL* THE CONTACT OWNS A 2021 KIA SORENTO. THE CONTACT STATED THAT UPON PARKING HIS VEHICLE IN A PARKING LOT, THE FORWARD COLLISION AVOIDANCE WARNING ACTIVATED WITHOUT ANOTHER VEHICLE BEING IN THE VICINITY. UPON INSPECTION, THE CONTACT DISCOVERED THAT THE FORWARD COLLISION AVOIDANCE SENSOR HAD DETACHED FROM THE FRONT DRIVER'S SIDE BUMPER AND RESTED ON THE BUMPER BY THE CONNECTING WIRES. THE CONTACT …
2021 · 500 miles · Electrical System
ONLY HAD CAR 8 DAYS WITH 500 MILES. WENT TO PULL AWAY FROM STOP SIGN AND CAR CUT OFF. WHEN ATTEMPTED TO RESTART, CAR ADVISED TO PLACE IN PARK FIRST. ONCE PLACED IN PARK AND PRESSED START BUTTON - ALL SYSTEMS WENT DEAD. SPARKS CAME FROM GROUNDING CABLE UNDER HOOD. WHEN GROUNDING CABLE WAS ADJUSTED, CAR STARTED TURNING ON AND OFF RANDOMLY. AFTER WAITING TWO HOURS FOR TOW TRUCK, WAS ABLE TO ADJ…
2021 · 500 miles · Engine
ONLY HAD CAR 8 DAYS WITH 500 MILES. WENT TO PULL AWAY FROM STOP SIGN AND CAR CUT OFF. WHEN ATTEMPTED TO RESTART, CAR ADVISED TO PLACE IN PARK FIRST. ONCE PLACED IN PARK AND PRESSED START BUTTON - ALL SYSTEMS WENT DEAD. SPARKS CAME FROM GROUNDING CABLE UNDER HOOD. WHEN GROUNDING CABLE WAS ADJUSTED, CAR STARTED TURNING ON AND OFF RANDOMLY. AFTER WAITING TWO HOURS FOR TOW TRUCK, WAS ABLE TO ADJ…

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