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Engine coolingPart report

2005 Saturn L300 Engine cooling Problems

Complaints
4about this part
Share
16%of 25 total for the year
Median mileage
8,038miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 4 complaints about the engine cooling of the 2005 Saturn L300, 16% of the 25 complaints for this model year. Where a mileage was given, the median is 8,038 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.

“Low coolant light would go on and off . Hose and clamp was leaking. Dealer fixed once. 1 month later the same hose and clamp was leaking again. Dealer fixed again. This is after the check engine light was on (oxygen sensor) and traction control light did not work. Other complaints for these item were submitted.”

NHTSA complaint #10136765, filed 2005-09, 75 miles

“January 28th, 2005 - purchased 2005 Saturn l-300. 10 minutes after the car left the lot the check engine light came on. The oxygen sensor was bad. The oxygen sensor was replaced by Saturn of fond du lac, wi.”

NHTSA complaint #10136761, filed 2005-09, 27 miles

“The car routinely would not start or would start and stall out on the first start of the day or after sitting for several hours. The vehicle would appear to run normally after the vehicle started on the second or third attempt. The vehicle could then be started and turned off normally. If the vehicle sat again then the problem would appear again. The vehicle was taken to Saturn of lakeside where they were unable able to reproduce the stall in a short period of time. They returned the vehicle and said they couldn't find any problems. …”

NHTSA complaint #10162065, filed 2006-07, 16,000 miles

Related service bulletins

Engine cooling: other model years

YearComplaintsShare of year
2005416%
2004813%
2003410%

Other parts of the 2005 Saturn L300

Electrical system
7 complaintsSuspension
3 complaintsTransmission and drivetrain
3 complaintsFuel system
2 complaintsOther or unknown
2 complaintsSteering
2 complaintsBrakes
1 complaintsEngine
1 complaintsSeat belts
1 complaintsSeats
1 complaintsTires
1 complaintsVehicle speed control
1 complaints

← All problems reported for the 2005 Saturn L300

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 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