really awful
Crashes / Fires:
4 / 0
Injuries / Deaths:
3 / 0
Average Mileage:
43,399 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.

2006 Lexus GS 300 engine problems

engine problem

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2006 Lexus GS 300 Owner Comments

problem #10

Jun 172015

GS 300

  • 104,497 miles


The contact owns a 2006 Lexus GS300. While driving approximately 65 mph, the speed suddenly decelerated to 40 mph. When the accelerator pedal was depressed, the speed eventually increased. The cause of the failure was not diagnosed. The manufacturer was not notified. The failure mileage was 104,497.

- San Diego, CA, USA

problem #9

Jan 132015

GS 300 8-cyl

  • 133,730 miles
While traveling at a rate of 40 mph I pressed the accelerator to go faster when suddenly the car hesitated and began jerking and slowing abruptly. Thank heavens no one was following me closely or I may have been rear ended. After this "brush with death experience, I have learned that Lexus has had numerous complaints about their engines and transmissions. I am very concerned about driving the vehicle after my experience and after reading about other Lexus owners who have had close brushes with accidents as well. Something must be done to hold this car maker accountable. It is clear at Lexus their priority is profits over the safety of their owners.

- Riverside, CA, USA

problem #8

Jul 012008

GS 300 6-cyl

  • Automatic transmission
  • miles
2006 Lexus GS300. Consumer requests reimbursement for expenses related to an accident with vehicle the consumer stated as she was slowly driving out of her driveway, she started to turn a corner when suddenly the vehicle accelerated at a high rate of speed. The consumer was unable to control the steering. She bounced off the curbs on the street, two or three time and the tires and rims were damaged, there was a gouge in the front bumper and the air bags deployed after finally coming to rest after the vehicle jumped off the median and she activated the emergency brake. The consumer also stated she had to replace the battery twice.

- Bakersfield, CA, USA

problem #7

Oct 102010

GS 300 6-cyl

  • Automatic transmission
  • 79,000 miles


The contact owns a 2006 Lexus GS300. The contact was driving 40 mph and applying the brakes as she approached an intersection, the vehicle did into respond and the contact crashed into the rear of another vehicle. The contact stated that the frontal driver and passenger air bags did not deploy. A police report was available. The vehicle was taken to the dealer who performed a diagnosis on the brake system and air bags but did not locate a failure with either. The driver sustained injuries to the back and neck. The rear passenger sustained injuries to the nose and back and the front passenger sustained injuries the breast due to the grip from the seat belts. The failure mileage was 79,000 and the current mileage was 81,000. Updated 12/14/2011 updated 02/23/11

- Hialeah, FL, USA

problem #6

Oct 232005

GS 300

  • 2,761 miles
The contact owned a 2006 Lexus GS300. The contact stated that the vehicle suddenly accelerated while driving at approximately 15 mph. The vehicle began shaking and a warning light appeared on the instrument panel. In an attempt to stop the vehicle, the contact crashed into a construction site. There were no injuries and the vehicle had minor body damage. The vehicle was taken to an authorized dealer where the body damage was repaired, but the failure could not be duplicated. The current and failure mileages were 2,761. Updated 06/22/10.

- Potomac, MD, USA

problem #5

Oct 152009

GS 300

  • 17,000 miles
I drive a 2006 Lexus GS300. Last fall, as I backed out of my parking space - in a building - my car "took off" and hit a cement wall. ( at first, I thought I hit the gas pedal in error however, after what happened next, I knew that was not the case. Fortunately, there were no pedestrians in the parking lot. ) I put the car in drive and it "took off" again. Luckily, I hit a cement parking bumper that stopped me. All this took place in maybe 15 seconds or so. Not realizing there was anything terribly wrong with my car, I steered around the bumper. The car continued to accelerate and I was headed for another cement wall. I was applying my brakes with all my effort and finally I came to a stop a few feet from the wall. Shaking, I drove my car directly to the Lexus dealer and told him what happened. (at that time I used the term "take off" as I hadn't heard about all the acceleration problems) he ran my car through a computer check and assured me that he could find nothing wrong. Several weeks later a friend asked me what kind of car I drove and told me about all the problems Toyota was having. I drove my car back to the dealer and asked him to recheck the car. He did, and again assured me that there were no problems. We bought this car used less than 1 year ago with just 12,000 miles on it. It occurred to me that it was possibly traded in because it had accelerated when the last owner had it. The dealer checked and said there had been no previous acceleration problems. One last bit of info....I'm not really sure the exact month I experienced the problems. And finally, even though I have not had any acceleration problems since last fall, I am still nervous every time I drive my car. Please advise. Thank you

- Toluca Lake, CA, USA

problem #4

Mar 312010

GS 300

  • 61,000 miles


The contact owns a 2006 Lexus GS300. The contact stated that at a traffic light, the rpms increased to 6000. Once the vehicle was turned off and restarted, the contact noticed that the rpms had increased but the vehicle began to function normally within a few minutes. The vehicle had not been inspected when the complaint was filed. The current and failure mileages were approximately 61,000.

- San Luis Obispo, CA, USA

problem #3

Dec 142009

GS 300

  • miles
2006 Lexus GS300. This event occurs when the cruise control is engaged. Suppose the speed is set at 70 mph and I slow down to 67 mph because of traffic. When I push the resume lever, the engine greatly speeds up and the transmission drops into a lower gear. The result is a lunge forward instead of a smooth increase in speed. Very dangerous.

- Plano, TX, USA

problem #2

Dec 022006

GS 300 6-cyl

  • 10,000 miles
The contact owns a 2006 Lexus GS300. While the vehicle was parked between two vehicles the contact shifted gears from reverse to drive with his foot on the brake pedal at 10 mph when the vehicle accelerated and the rpms increased to 6,000. The dealer made several attempts to diagnose the failure and was unable to do so. He recently took the vehicle back to the dealer and they insist that nothing was wrong with the vehicle. He contacted the manufacturer who also stated that nothing was wrong with the vehicle. He does not driver the vehicle on the highway. He wanted to trade the vehicle for another one but the dealer denied his request to do so. The VIN was not available. The failure mileage was 10,000 and the current mileage is 31,000. Updated 03/24/10 updated 08/23/10

- Santa Monica , CA, USA

problem #1

Aug 032009

GS 300

  • 26,000 miles
A few months after I bought my 2006 Lexus GS300 in Jan., 2006, I experienced the sudden acceleration of my car. I was passing a car and when I took my foot off of the gas pedal it continued to accelerate. I tried the brake but it seemed frozen..it didn't move at all. I quickly threw the car into neutral, and as I was about to hit the car in front of me, I shifted into park...it was the only way to get the car to stop. Then I turned the car off. The first time I attempted to start the car back up, it raced. On the second attempt it seemed to start up normally, and I drove it to work. I took the car in to the dealer the next day. They said everything checked out fine. The other evening 8/3/09, a little more than 3 years after the first incident, my wife was driving on the highway, with me in the passenger seat. As she was accelerating, all of a sudden when she took her foot off of the accelerator, the pedal continued to move toward the floor. It got up to 80 miles an hour, when she did as I did, put it in neutral, pull over on the shoulder, and throw it into park. She was frantic, calling the car a " deathtrap ". I called the dealer for a tow and when I described what happened, he said it was probably the mats..no way. Even after we moved the mat completely away and restarted the car..the RPM's raced up. Even the tow truck driver said the car raced and " jumped ' when he pulled it onto the flatbed. The dealer called the next day and said the car is fine. I told him I want them to keep the car until they figure out the problem and fix it. I had a loaner for a couple days and then the demanded it back. I said I don't want my car back until it's fixed or they give me a new one. I can't supply the VIN right now because the car is still at the dealer, but I can get it.

- Skokie, IL, USA

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