Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

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2.4

hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
63,049 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2010 Kia Optima drivetrain problems

drivetrain problem

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2010 Kia Optima Owner Comments

problem #18

Nov 262015

Optima

  • 71,000 miles

A D V E R T I S E M E N T S

The car has a lurching issue when it slows down to 20mph when the car lurches with a hard down shift to 1st gear. This phenomena is especially acute when the car is cold or when you first start driving it.

- Cheshire, CT, USA

problem #17

Nov 082014

Optima 4-cyl

  • 70,000 miles
While decelerating, either braking or coasting, the car will lurch violently when reaching approximately 22 mph. The severity of the lurch varies but in most instances it is hard enough to snap my neck forward.

- Corfu, NY, USA

problem #16

Mar 302011

Optima

  • 100,000 miles
The contact owns a 2010 Kia Optima. The contact stated that the vehicle downshifted violently. The vehicle was taken to a private mechanic where the failure was confirmed. The contact also mentioned that the passenger side low beam headlight failed due to the a failed wire. The vehicle was not repaired. The manufacturer was contacted and informed the contact that the vehicle was not included in the manufacturer's recall. The failure mileage was approximately 100,000.

- Aston, VA, USA

problem #15

Nov 292013

Optima 4-cyl

  • 67,000 miles

A D V E R T I S E M E N T S

Hard jerk when downshift into first gear at 20-22 mph. I am concerned that this could cause an accident on wet, icy or snow covered roads. When I asked the dealer about this problem, he said he had not heard of it.

- Ringgold, GA, USA

problem #14

Aug 012012

Optima

  • 60,000 miles
The car buckles when reducing your speed to around 20 mph. Also the rear seat door lock stopped working and my car is no longer under warranty and Kia wants to charge me around 700 dollars to fix it.

- Elk Ridge, UT, USA

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problem #13

Mar 202013

Optima 4-cyl

  • 73,000 miles
Vehicle kicks from second gear to first gear when slowing down from 20mph.

- Pasadena, CA, USA

problem #12

Mar 202013

Optima 4-cyl

  • 82,000 miles

A D V E R T I S E M E N T S

Vehicle kicks from second gear to first gear when slowing down from 20mph.

- Pasadena, CA, USA

problem #11

Mar 202013

Optima 4-cyl

  • 82,000 miles
Vehicle kicks from second gear to first gear when slowing down from 20mph.

- Pasadena, CA, USA

problem #10

Mar 202013

Optima 4-cyl

  • 77,000 miles
Vehicle kicks from second gear to first gear when slowing down from 20mph.

- Pasadena, CA, USA

problem #9

Mar 202013

Optima 4-cyl

  • 80,000 miles
Vehicle kicks from second gear to first gear when slowing down from 20mph.

- Pasadena, CA, USA

problem #8

Mar 202013

Optima 4-cyl

  • 67,000 miles

A D V E R T I S E M E N T S

Vehicle kicks from second gear to first gear when slowing down from 20mph.

- Pasadena, CA, USA

problem #7

Mar 202013

Optima 4-cyl

  • 80,000 miles
Vehicle kicks from second gear to first gear when slowing down from 20mph.

- Pasadena, CA, USA

problem #6

Mar 202013

Optima 4-cyl

  • 80,000 miles
Vehicle kicks from second gear to first gear when slowing down from 20mph.

- Pasadena , CA, USA

problem #5

Feb 012013

Optima

  • 20 miles
When braking at lower speeds of less then 20mph the car lurches or jerks like the anti-lock brakes are engaging or the transmission is downshifting hard.

- Beltsville, MD, USA

problem #4

Dec 052012

Optima

  • 58,000 miles
When braking or not around 20 miles an hour car jerks forward.

- San Antonio , TX, USA

problem #3

Jul 162012

Optima

  • 55,866 miles
The car lurches when down shifting from 18 to 20 miles an hour. Hard down shift at every stop.

- Oklahoma City , OK, USA

problem #2

Jan 162012

Optima 4-cyl

  • miles
When slowing down without the assistance of using the brakes, the car jerks as the transmission does a hard downshift causing enough jerk to the driver. This happens all the time.

- San Diego, CA, USA

problem #1

Jan 162012

Optima

  • 32,000 miles
When slowing down, either with or without braking assistance, car jerks as the transmission does a hard downshift from 2nd to 1st gear when reaching 20 mph. The force of the downshift is enough to jolt the driver.

- North Potomac, MD, USA

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