One problem related to engine has been reported for the 1999 Lexus GS300. The most recently reported issues are listed below.
When I placed my car in cruise control, the engine sped up from 60 mph to 90 mph. The engine alternated between 60 mph and 90 mph for a few seconds, finally the engine died---which luckily stopped the car.
| Engine And Engine Cooling problems | |
| Engine problems | |
| Engine Noise problems |