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Engine coolingPart report

2006 Lexus GS300 Engine cooling Problems

Complaints
4about this part
Share
3%of 124 total for the year
Median mileage
40,700miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 4 complaints about the engine cooling of the 2006 Lexus GS300, 3% of the 124 complaints for this model year. Where a mileage was given, the median is 40,700 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.

“My 2006 Lexus GS300 is consuming oil. I have taken the car to the Lexus dealer 4 times. The car is still under warranty and there is not anything being done to correct the problem. I purchased the car in august 2008. This problem occurred 18 months after I purchased the car. I continue to get sent away without an answer to the problem. From my research the problem are the rings. One of the Lexus technicians accidentally stated that the last time I took the car in. The car is consuming 1-2 pints of oil a month. There has not been anything done to correct the problem.”

NHTSA complaint #10352474, filed 2010-08, 59,000 miles

“On february 9, 2006, the fourth occurrence occurred. Each time, there was a strong smell of sulfur in the car with the windows closed. A day or a few days later, the check engine light went on (check vsc).I am concerned that there may also be carbon monoxide in the car at the same time. The dealer/service manager indicates that there is fuel in the engine oil. I do not know if it is safe to operate a brand new vehicle with fuel in the engine oil. Attempts have been made to correct the problem, parts replaced, but the problem has recurred four times with 1494 miles on the odometer.”

NHTSA complaint #10151072, filed 2006-02, 330 miles

“The contact owns a 2006 Lexus GS300. While driving approximately 30 MPH, the vehicle stalled. The vehicle was restarted and driven to the dealer. The technician diagnosed that the coolant was unable to get to the engine, which caused it to overheat and blow the head gasket. The manufacturer was notified of the failure. The failure mileage was 97,000. Updated 02/02/15 the consumer stated the clamp holding the hose from the radiator to the engine failed. The manufacturer did not offer any assistance. Updated 6/8/2015”

NHTSA complaint #10654941, filed 2014-11, 97,000 miles

Related service bulletins

Engine cooling: other model years

YearComplaintsShare of year
200643%
2001212%
200026%
199938%
199835%

Other parts of the 2006 Lexus GS300

Exterior lighting
35 complaintsEngine
18 complaintsTransmission and drivetrain
13 complaintsElectrical system
12 complaintsVehicle speed control
12 complaintsBrakes
11 complaintsSteering
10 complaintsFuel system
9 complaintsOther or unknown
7 complaintsBody and structure
7 complaintsVisibility (wipers, defrost, mirrors)
7 complaintsTires
5 complaints

← All problems reported for the 2006 Lexus GS300

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 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