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full bulletin at NHTSA ↗2006 Kia Amanti powertrain problems
severe 13 complaints filed with NHTSA · avg repair $2,500 · see powertrain across all vehicles →
Failure mileage
Complaints
13
Recalls
0
Avg fix
$2,500
3crashes
3injuries
When does it fail?
Of the 13 powertrain complaints filed for the 2006 Kia Amanti, here's the actual mileage breakdown — failures cluster heaviest at 0-25,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Reported failure mileage clusters in the 0-25,000 mi band — 5 of 6 complaints with an odometer reading on file land there.
Powertrain accounts for 28% of all owner complaints filed against this vehicle, across 6 categories tracked.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering powertrain on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners describe three distinct powertrain problems in the 2006 Amanti, all intermittent and dangerous.
Sudden unintended acceleration happens with foot on brake. Owners report the vehicle surges forward on startup, during parking maneuvers, or while braking—sometimes refusing to shift into neutral and continuing to accelerate uncontrollably. One owner's vehicle accelerated into a garage after a failed parking attempt, totaling the car and sending both occupants to the hospital. Another reported the accelerator pedal stuck down and the brake unresponsive, ending in a tree strike and rollover.
Lag and bucking from stops causes the engine to run at high RPM while the vehicle crawls forward under 10 mph, then lurches when power finally engages. This starts early (4,900 miles) and persists through 94,000 miles, worse in cold weather. Owners fear merging into traffic when the car refuses to accelerate.
Transmission dropout causes the engine to keep running but the drivetrain to completely disengage—the vehicle bucks, dies, and remains powerless for an hour before recovering on its own.
Dealers test-drive the vehicles, fail to reproduce the problems, and tell owners either to keep driving until it fails reliably or to trade the car in. One replaced the computer board; the fault returned within six months. Kia has not issued a recall for these failures.
Failure modes owners describe
Sudden unintended acceleration
Engine surges or accelerates without driver input or despite brake pressure. Occurs on startup, during parking maneuvers, or while braking. In severe cases the vehicle continues to accelerate even with driver's foot on brake, creating loss of control.
When: 6,500–20,000 miles; also reported at higher mileage. Happens intermittently, sometimes in cold weather, no consistent pattern.
Symptoms owners cite: Vehicle surges forward on startup or light throttle input; Continued acceleration despite foot on brake; Inability to disengage gear or shift to neutral; Vehicle lurches forward while braking; Accelerator pedal stuck in depressed position
Repairs/costs cited: Dealers unable to reproduce problem on test drive. One owner reports dealer performed computer reprogramming; another reports dealer replaced computer board (failure recurred six months later). Multiple owners state dealers advised to continue driving until problem becomes reproducible.
Recalls/TSBs owners mention: Kia referred complainants between dealers for testing. No recalls mentioned. One dealer suggested trading in vehicle rather than attempting repair.
Insufficient acceleration / lag and bucking
Vehicle fails to accelerate smoothly from stop or at highway speeds; instead hesitates, accelerates very slowly (under 10 mph), then bucks or lurches. Engine RPMs run high despite slow vehicle speed. Problem is intermittent and unpredictable.
When: Reported from 4,900 miles through 94,000 miles. Mostly occurs in cold weather; can happen any time of day.
Symptoms owners cite: Vehicle will not accelerate past 10 mph from stop; Very slow acceleration from complete stop; RPMs high while vehicle speed remains low; Bucking or lurching sensation; Failure to accelerate into overdrive on highway; Lag or hesitation at minimal throttle input
Repairs/costs cited: Spark plugs and throttle sensor replaced by one owner without resolution. Ignition sensors replaced (2008 and 2012 visits) without fixing issue. Dealer kept one vehicle 3 days, could not diagnose, recommended trading in.
Recalls/TSBs owners mention: Dealers unable to recreate problem during test drives. One dealer replaced computer board with temporary success; failure returned 6 months later. No other recalls or service bulletins mentioned.
Transmission disengagement or stalling
Vehicle stalls or completely loses power and acts as though transmission disengages mid-drive, even though engine does not stop. After extended period (up to one hour), vehicle recovers and operates normally.
When: One report at 78,000 miles; another failure occurred two years prior with no resolution.
Symptoms owners cite: Vehicle stalls without warning while driving (at 40 mph); Engine continues to run but transmission appears to disengage; Vehicle bucks, accelerates erratically, then dies; Power loss persists for extended periods before recovery
Repairs/costs cited: One vehicle towed to dealer but not repaired. Problem duplicated by second owner two years prior; dealer unable to diagnose.
Recalls/TSBs owners mention: No manufacturer notification or response documented in narratives.
Synthesized from 13 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 6 most recent
2006 Kia amanti speed control problem at minimal throttle the car would lurch or move very slow and then would buck mostly in cold weather. Never know when this will happen. Started at 4900 miles and still having problem at 94000. Dealer never can recreate problem. We have had the car in many times and its in today still no fix. I believe this car will get us killed. If you pull out in traffic…
Tl* - the contact stated that while attempting to accelerate from a stop the vehicle would not accelerate. This was an intermittent problem. If the vehicle did accelerate, it would do so very slowly and the rpms were running as though the consumer was traveling at an accelerated speed. The contact stated that this could happen anytime of the day. The contact stated that sometimes when trying…
Car would not pick up speed as we were leaving from a complete stop took car in 2008 and found the ignition sensor was bad, it was replace car ran good, 2012 car starting with slow speed at acceleration, changed spark plugs, throttle sensor, 2 ignition sensor. Nothing helped. Took car to dealer, Kia kept car for 3 days and could not find the trouble. Kia dealer called and notified me it was best…
Tl* the contact owns a 2006 Kia amanti. While attempting to accelerate from a stationary position, the vehicle would not accelerate past 10 MPH. The contact indicated that the failure would occur once the vehicle warmed up. The vehicle was taken to the dealer who replaced a computer board and the failure was remedied; however, the failure recurred six months later. No further information was…
When parking and trying to put the car in reverse our 2006 amanti Kia lurched forward and accelerated down the street. I was the passenger and had unbuckled my seat belt in preparation of getting out of the car. Seeing that I was not belted in, I leaned over and saw that my husband had his foot on the brakes and not on the accelerator. The brakes did not engage, nor could the car gear down. The…
When parking and trying to put the car in reverse our 2006 amanti Kia lurched forward and accelerated down the street. I was the passenger and had unbuckled my seat belt in preparation of getting out of the car. Seeing that I was not belted in, I leaned over and saw that my husband had his foot on the brakes and not on the accelerator. The brakes did not engage, nor could the car gear down.…
Had powertrain trouble with your 2006 Kia Amanti?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the powertrain problem on the 2006 Kia Amanti?
It's a meaningful issue. 13 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $2,500.
At what mileage does the powertrain typically fail?
Across the 10 complaints that reported odometer mileage, most powertrain failures cluster between 6,500 and 75,000 miles, with the median around 20,000. A quarter of owners report trouble before 6,500; a quarter make it past 75,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $2,500 for powertrain repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to powertrain?
No active recalls currently cover powertrain issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2006/Kia/Amanti.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.