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Transmission and drivetrainPart report

2001 Kia Optima Transmission and drivetrain Problems

Complaints
12about this part
Share
8%of 143 total for the year
Median mileage
11,750miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 12 complaints about the transmission and drivetrain of the 2001 Kia Optima, 8% of the 143 complaints for this model year. Where a mileage was given, the median is 11,750 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“Since purchasing my 2001 Kia Optima, I have had nothing but difficulty. I purchased an extended warranty at the dealership I purchased it from in case I needed repairs. I got my money's worth. But the problems I had are common problems with the vehicle, locks not working, windows not rolling up, paint peeling off, transmission problems, check engine light constantly on, decreased acceleration, heat surges when gas pedal released and pressed and the list goes on. It is not hard to find other Kia owners with the same problems. …”

NHTSA complaint #10264297, filed 2009-04, 14,000 miles

“Input and output speed sensor failure. Failure of sensors cause transmission to drop from 4th gear to 3rd gear. From there transmission can only shift between 2nd and 3rd gear using sport shift-stick . On a good day without problems engine is sluggish. Very scary to drive.”

NHTSA complaint #10188702, filed 2007-04, 107,000 miles

“When I first brought the car and drove it, the lights became dim in the inside and the headlights. The radio turned off and on, took it to dealer 4-5 times for problem and they could find nothing wrong. The car doesn't pick up spend when going over hills not even little ones. The gas needle does not read full even when the tank is practically overflowing with gas. Reading a full tank of gas happens every once in a while. Check engine light comes on . …”

NHTSA complaint #10164399, filed 2006-08, 87,000 miles

“Purchased oct,15,07. Within 3 day we had it up to dealer were purchases 1) for windows not going up or down all the time. 2) light on radio and heater do not work. 3) the car had no power and would go from 1st gear to 3rd gear and would stay that way until car turned off. 4)had to replace speed shift sensor. 5) brakes. Got looked in car several times and could not get out. Sometimes they work most of the time they don't. 6). Antenna broke off for no reason. Went out on day barely touched it and it feel off. …”

NHTSA complaint #10220313, filed 2008-03, 8,900 miles

“Car hesitated once or twice upon acceleration, could not recreate problem. 1 week ago, while trying to pull out of the garage, car would not go into gear. When car finally went into gear car would not move unless accelerator pedal was pushed to the floor, and even then barely any movement. Took car to Kia dealership, three days later dealership called, the transmission needs to be replaced. Dealership said it had to fight with the factory rep to have the transmission covered under the warranty, even though I provided proof of maintenance. …”

NHTSA complaint #10220777, filed 2008-03, 77,500 miles

Related service bulletins

Transmission and drivetrain: other model years

YearComplaintsShare of year
20202718%
2019178%
2018198%
2017218%
20167410%
2015495%
2014203%
2013645%
2012546%
2011254%
20102432%
20093328%
20081813%
2007138%
2006149%
200532%
200484%
200386%
200266%
2001128%

Other parts of the 2001 Kia Optima

Body and structure
35 complaints
Suspension
28 complaints
Air bags
27 complaints
Engine cooling
24 complaints
Electrical system
17 complaints
Latches, locks and linkages
15 complaints
Brakes
14 complaints
Equipment
7 complaints
Vehicle speed control
7 complaints
Seat belts
5 complaints
Visibility (wipers, defrost, mirrors)
5 complaints
Wheels
5 complaints

← All problems reported for the 2001 Kia Optima

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology