2003 Lexus RX300 Engine Problems
- Complaints
- 1about this part
- Share
- 4%of 25 total for the year
- Median mileage
- 106,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the engine of the 2003 Lexus RX300, 4% of the 25 complaints for this model year. Where a mileage was given, the median is 106,000 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.
“The contact owns a 2003 Lexus RX300. The contact stated that the HVAC system was inoperable. Additionally, the VSC and check engine warning lights were illuminated while starting the vehicle. The vehicle was diagnosed at an AutoZone with a catalytic converter failure. The vehicle was not repaired. The manufacturer was informed of the failure. The approximate failure mileage was 106,000.”
NHTSA complaint #11455537, filed 2022-03, 106,000 milesRelated service bulletins
- 10179601Aug 5, 2020TSB: Vehicles may display evidence of a fluid leak or fluid seep from powertrain components. This bulletin explains how to determine the differences between a fluid leak versus a…
Engine: other model years
Other parts of the 2003 Lexus RX300
7 complaintsVehicle speed control
5 complaintsAir bags
3 complaintsElectrical system
3 complaintsEngine cooling
3 complaintsVisibility (wipers, defrost, mirrors)
3 complaintsElectronic stability control
2 complaintsEquipment
2 complaintsBrakes
1 complaintsFuel system
1 complaintsOther or unknown
1 complaintsSuspension
1 complaints
← All problems reported for the 2003 Lexus RX300
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