1999 Lexus GS400 Vehicle speed control Problems
- Complaints
- 6about this part
- Share
- 35%of 17 total for the year
- Median mileage
- 57,188miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 6 complaints about the vehicle speed control of the 1999 Lexus GS400, 35% of the 17 complaints for this model year. Where a mileage was given, the median is 57,188 miles. 3 of these say a crash was involved, according to the filers.
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.
“May 9, 2017. At approximately 5:50 pm, I got in my car which was parked in a small outdoor parking lot. I started it and put it in reverse and the car took off. Even though I applied the brakes the car did not stop or slow down. It slammed into a parked 2016 mercedes with such force that the mercedes was left almost perpendicular with its space. Police were called and came to scene but because the parking lot is on private property, no report was filed. The owner of the other vehicle and I exchanged information.”
NHTSA complaint #10991761, filed 2017-05, 260,000 miles“While backing out and shifting into drive vehicle surged forward. As a result, vehicle crashed into a building. Upon impact, dual airbags deployed upon impact.”
NHTSA complaint #10065365, filed 2004-04, 40,000 miles“The contact owns a 1999 GS400. The contact stated that while applying the brake, the vehicle would accelerate. The failure has occurred intermittently for 10 years. The dealer was unable to diagnose the failure. The contact stated that the floor mat recall should be considered regarding the failure. The current mileage was 80,000 and the failure mileage was 21,000.”
NHTSA complaint #10294248, filed 2009-12, 21,000 miles“The contact owns a 1999 Lexus GS400. While driving approximately 35 MPH, the contact depressed the brake pedal, but the vehicle did not stop and surged forward. The contact had to pump the brake pedal approximately three times until the vehicle stopped. The contact stated that the vehicle was repaired for the same failure in 2013 by bay ridge Lexus (6502 5th avenue brooklyn, new york 11220). The vehicle was going to be towed to the dealer for diagnostic testing. The manufacturer was not notified. The approximate failure mileage was 116,044.”
NHTSA complaint #10995810, filed 2017-06, 116,044 miles“On at least six occasions as my husband and son applied the brake to stop the car jerked forward. This was caused by their foot overhanging the brake and when depress this overhang hits the accelerator. The last time in may was the most significant one . In the process of parking the car in a restaurant the car jumped forward and was stopped by a cement parking barrier.”
NHTSA complaint #724481, filed 2000-06Vehicle speed control: other model years
Other parts of the 1999 Lexus GS400
4 complaintsSuspension
4 complaintsBrakes
3 complaintsEngine cooling
2 complaintsExterior lighting
2 complaintsAir bags
1 complaintsFuel system
1 complaintsOther or unknown
1 complaintsSeat belts
1 complaintsTransmission and drivetrain
1 complaints
← All problems reported for the 1999 Lexus GS400
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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