Kia Optima 2001–2005
1st generation · MS (Magentis abroad); facelift MY2004
NHTSA data through 12 August 20261,075 complaints, 810 with mileageMethod
On this generation, failures are spread across the mileage range, with the middle half between 51,000 and 110,000 miles.
- Rest of the range
- Median
- 200,000+ — 13 complaints (1.6%), plotted separately
- 10%
- 15,343
- 25%
- 51,000
- Median
- 82,826
- 75%
- 110,000
- 90%
- 140,000
Show the numbers
| Mileage | Complaints | Share |
|---|---|---|
| 0–10,000 | 65 | 8.0% |
| 10,000–20,000 | 32 | 4.0% |
| 20,000–30,000 | 23 | 2.8% |
| 30,000–40,000 | 23 | 2.8% |
| 40,000–50,000 | 43 | 5.3% |
| 50,000–60,000 | 48 | 5.9% |
| 60,000–70,000 | 76 | 9.4% |
| 70,000–80,000 | 65 | 8.0% |
| 80,000–90,000 | 96 | 11.9% |
| 90,000–100,000 | 62 | 7.7% |
| 100,000–110,000 | 68 | 8.4% |
| 110,000–120,000 | 34 | 4.2% |
| 120,000–130,000 | 45 | 5.6% |
| 130,000–140,000 | 45 | 5.6% |
| 140,000–150,000 | 22 | 2.7% |
| 150,000–160,000 | 15 | 1.9% |
| 160,000–170,000 | 16 | 2.0% |
| 170,000–180,000 | 10 | 1.2% |
| 180,000–190,000 | 6 | 0.7% |
| 190,000–200,000 | 3 | 0.4% |
| 200,000+ | 13 | 1.6% |
What this can and cannot tell you: these are complaints owners chose to file, not a failure rate. Popular models accumulate more of them simply by being common. How this is built.
Owners filed 1,075 complaints with NHTSA about the 2001–2005 Kia Optima, and 810 of them record the mileage at which the failure happened. That is enough to show not just what fails, but when.
Failures are spread across the mileage range, with the middle half between 51,000 and 110,000 miles. The median is 82,826 miles.
The most-reported areas are latches and locks (21.2% of complaints, typically around 84,000 miles), body structure (14.9% of complaints, typically around 101,000 miles), the electrical system (12.7% of complaints, typically around 80,000 miles).
What fails, and when
- Latches and locks84,000median 84,161 miles, middle half 65,000 to 104,000
- Body structure101,000median 100,529 miles, middle half 78,000 to 130,000
- Electrical system80,000median 80,000 miles, middle half 45,000 to 107,000
- Airbag system58,000median 57,500 miles, middle half 28,000 to 87,000
- Suspension114,000median 113,700 miles, middle half 86,000 to 138,000
- Engine and its cooling system50,000median 50,000 miles, middle half 19,000 to 68,000
- Transmission and driveline34,000median 34,000 miles, middle half 9,000 to 82,000
| System | Complaints | Share | Median | 25–75% |
|---|---|---|---|---|
| Latches and locks | 228 | 21.2% | 84,000 | 65,000–104,000 |
| Body structure | 160 | 14.9% | 101,000 | 78,000–130,000 |
| Electrical system | 136 | 12.7% | 80,000 | 45,000–107,000 |
| Airbag system | 118 | 11.0% | 58,000 | 28,000–87,000 |
| Suspension | 80 | 7.4% | 114,000 | 86,000–138,000 |
| Engine and its cooling system | 56 | 5.2% | 50,000 | 19,000–68,000 |
| Transmission and driveline | 37 | 3.4% | 34,000 | 9,000–82,000 |
| Hydraulic brake circuit | 33 | 3.1% | 44,000 | 9,000–69,000 |
| Problems owners could not categorise | 30 | 2.8% | 96,000 | 65,000–124,000 |
| Fuel system | 30 | 2.8% | 77,000 | 61,000–87,000 |
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 82,826 miles; the figures below show which parts of the car run ahead of that and which run behind.
Latches and locks account for 21.2% of complaints (228 reports, 186 of them with a mileage figure), with a median of 84,161 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 65,000 and 104,000 miles.
Body structure accounts for 14.9% of complaints (160 reports, 131 of them with a mileage figure), with a median of 100,529 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 77,500 and 130,000 miles.
The electrical system accounts for 12.7% of complaints (136 reports, 105 of them with a mileage figure), with a median of 80,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 45,000 and 107,000 miles.
The airbag system accounts for 11.0% of complaints (118 reports, 74 of them with a mileage figure), with a median of 57,500 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 28,476 and 87,000 miles.
The suspension accounts for 7.4% of complaints (80 reports, 68 of them with a mileage figure), with a median of 113,700 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 85,854 and 138,000 miles.
The engine and its cooling system accounts for 5.2% of complaints (56 reports, 37 of them with a mileage figure), and it fails early — a median of 50,000 miles, well before the vehicle's overall median. Failures clustered this far below the rest of the car usually point to a design or manufacturing problem rather than wear, because wear does not selectively target one system on low-mileage examples. The middle half of these reports falls between 19,195 and 68,000 miles.
Differences between model years
Within this generation, complaint volume is not constant across model years. The 2004 model year drew the most — 306 complaints — while 2002 drew the fewest at 168. The median year sits at 190.
Recalls and what they cover
No recall campaigns covering this generation appear in NHTSA's post-2010 recall file. That is not the same as an absence of problems — recalls address safety defects specifically, and many of the complaints above concern faults that are expensive or annoying without meeting that threshold.
Reported severity
Of the 1,075 complaints filed against this generation, 85 reported a crash; 13 reported a fire; 62 reported an injury. Crash-involved reports represent 7.9% 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, failures on this generation are spread rather than concentrated: the middle half falls between 51,000 and 110,000 miles, with a median of 82,826. There is no single mileage threshold to watch, which means condition and maintenance records are more informative than the odometer.
On inspection, latches and locks and body structure are where this generation's reports concentrate, so those are the areas worth a specific look. Latches and locks in particular shows a median failure mileage of 84,161, 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
Engine
Interference-design engines with timing belts; belt failure causes valve damage. Crankshaft and camshaft position sensor failures cause intermittent stalling.
Transmission
4-speed automatic slipping and harsh shift complaints at moderate mileage.
By model year
| Year | Complaints | With mileage |
|---|---|---|
| 2001 | 231 | 132 |
| 2002 | 168 | 141 |
| 2003 | 190 | 145 |
| 2004 | 306 | 251 |
| 2005 | 180 | 141 |
What owners reported
Dt: the front passenger side door will not unlock from the inside or the outside. The key does not always work. Also the remote is not able to unlock the doors. This problem first started in 7-2001. The consumer took the vehicle to a dealership to be repaired and they were still waiting for the part. There also…
2001 · 100 miles · Latches and locks
My vehicle has spent more than 35 days in a Kia authorized dealership including transmission repairs since the date of purchase. I have carried the vehicle to two different dealerships more than six times. The problems with the vehicle have not yet been repaired. I feel that this vehicle is unsafe and a liability…
2001 · 2,000 miles · Transmission and driveline
I've taken my 2001 Kia Optima into the shop going at least 6 times. My brakes are a problem. They squeak and my front end vibrates. The dealer, galeana Kia, says there's nothing wrong with the car, just brake dust. They've tried to fix it, but the problem comes back. Kia gave me 500 dollars (customer satisfaction…
2001 · 4,000 miles · Hydraulic brake circuit
My 2001 Kia Optima has become the modern age , this vehicle has a mind of it's own. The power locks shuts open and locks on it's own, the vehicle is not reliable when crossing a highway on our street. Vehicle stalls at the point of acceleration and does not respond to pressing of gas pedal. When car electrical system…
2001 · 7,000 miles · Electrical system
Built from 810 NHTSA complaints with mileage · snapshot 2026-08-12 · open data · reproduce this page