2012 Kia Optima engine problems: poor acceleration

Poor Acceleration


pretty bad
Typical Repair Cost:
Average Mileage:
83,200 miles
Total Complaints:
4 complaints

Most Common Solutions:

  1. replace fuel pump (3 reports)
  2. replace module and connector, bleed system (1 reports)
2012 Kia Optima engine problems

engine problem

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2012 Kia Optima Owner Comments

problem #4

Sep 302018

Optima ES

  • Automatic transmission
  • 98,000 miles


Starting in Feb 2018, when I would be driving and pushing on the gas all of a sudden the car seemed like it wasn't even getting gas.... I really thought it was the Turbo. Had it fixed.. it was cut and pasted from their email rec turbo control adjustment (found history code P259E(turbo A Boost control pos at low limit)

CUST STATES ENGINE OR FLUID IS LEAKING UNDER VEHICLE CHECK AND ADVISE replaced oil pan gasket (found oil pan leaking) replaced turbo oil feed line (found oil feed line leaking at both connection)

Two months later it did it again... so another fix. They said the last visit was a performed adjustment, now we have to waste gate actuator failure nec to replace....

Last month (in Aug) it happened again - brought it in and was told it was a key fob error and to get a new one - which I did not. The very next week it happened again.

NOW I am being told water in the engine and it "looks" like the car was in a flood type situation. This is what they wrote


So after doing the first two fixes costing about $3,000.. NOW they want another $4500. The car have never been in a flood. I don't even drive through large puddles. Single mom, safety has always been a concern of mine.. I am the only one who drives this vehicle.

This is so frustrating.

- Wendy H., Smithfield, NC, US

problem #3

Aug 242017

Optima EX 2.0L

  • Automatic transmission
  • 97,000 miles

While driving down US93 in NH, I noticed a check engine light. Up to that point, I had never had problems with my KIA. After getting home (not really noticing any change in the way the car drove or accelerated), I parked in the garage, shut the car off, and sat down to read the manual about the check engine light. I called the nearest KIA dealer and they said to bring it in, which I did the next day. After a very short time, they came back and told me that the engine had passed the recall test, so no new engine. However, they had found 5 error codes, some of which they said were "ghost" codes, but others had to be investigated and as it was a Friday and was late, they would not be able to get to it that day. They gave me a ride home and said they would call when they had an answer. They called the next day and said that they had determined that it was the High Pressure Fuel Pump(HPFP) and that the cost of the part was about $550 and the labor would add another $300 approximately. I told them to order the part and go ahead with the repair, which they did. They called on Sunday and said that the part would be in on Monday and the car would be ready by noon time. On Monday they called me around 10AM to say that the HPFP was installed and the car was running much better; however, on closer inspection, it was determined that the Turbo was not connected to the arm that determined input etc. They said that the "clip" was missing. They also said that they couldn't just "get"a clip sit was part of the Turbo, so their proposed solution was to replace the Turbo! and that the cost would be well over $1,500!! They said they would work up a quote and get back to me. I couldn't believe that just because a "clip" was missing that I would have to pay over $1,500 to get this fixed and they agreed with me. They called back after about 45 minutes and said that they had located the clip/solenoid as part of the Waste Gate and that would only cost $400-$500!! I asked them to text me the part number for the waste gate and/or turbo thinking that perhaps I could find one online at less of a price. The service manager said he would do that as well as talk some people at KIA to see what they could do about this.

- Phil D., Litchfield, US

problem #2

Oct 172016

Optima EX 2.4L

  • Automatic transmission
  • 65,000 miles

Fuel pump out at 65k. Not acceptable. I want to be reimbursed by kia. I mentioned this to Kia Dealership much earlier they said nothing was wrong. Warranty expired and I am out of 900 dollars. The dealership did say that this is happening to optima and sorrentos. Therefore it is a problem that they need to take responsibility and reimburse the owners.

- Edward H., Rex, GA, US

problem #1

Jun 012015

Optima LX 2.4L

  • Automatic transmission
  • 72,619 miles

I have the receipt from dealer. they said it was not covered by warranty . So I have to save up for 6 months to have it done. it should have been covered by the warranty.

- Lee G., Davenport, FL, US

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