2018 Chevrolet Volt Engine cooling Problems
- Complaints
- 2about this part
- Share
- 1%of 226 total for the year
- Median mileage
- 53,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the engine cooling of the 2018 Chevrolet Volt, 1% of the 226 complaints for this model year. Where a mileage was given, the median is 53,000 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 2018 Chevrolet Volt. The contact stated that while his wife was driving 60 MPH, the message “Power Reduced” was displayed. The vehicle was taken to an independent mechanic who determined that the failure was due to the EGR valve. The contact called the local dealer, but the vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 51,000.”
NHTSA complaint #11663035, filed 2025-05, 51,000 miles“The contact owns a 2018 Chevrolet. The contact stated that on several occasions while driving at various speeds, the vehicle lost motive power with the check engine warning light illuminated. The vehicle was steered to the side of the road and restarted each time, but the failure persisted. The vehicle was taken to the dealer where it was diagnosed that the EGR valve needed to be replaced and 40 unknown DTC codes had been retrieved. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 55,000.”
NHTSA complaint #11591307, filed 2024-05, 55,000 milesRelated service bulletins
- 10250775Feb 22, 2024This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large…
- 10250505Feb 7, 2024This service bulletin provides information on the cold start control system in DI engines to reduce cold start emissions and improve fuel economy.
- 10250503Feb 7, 2024This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations.
- 10249579Jan 12, 2024This PI bulletin advises the technician on the proper way to install the pistons in an engine.
- 10247192Dec 8, 2023This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
- 10245395Nov 6, 2023This service bulletin provides a vibration analysis worksheet the technician can use in conjunction with the appropriate Vibration Analysis-Road testing procedure when diagnosing…
- 10245198Oct 16, 2023This service bulletin provides Diagnostic Aid information for Speed Limited Message or Reduced Propulsion Power Message With no DTCs.
- 10244273Oct 6, 2023This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
- 10242061Aug 7, 2023This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
- 10237846Jun 7, 2023This service bulletin provides information to dealership personnel on automatic transmission shift and engine driveability concerns and/or MIL ON due to aftermarket oil bath air…
Engine cooling: other model years
Other parts of the 2018 Chevrolet Volt
88 complaintsTransmission and drivetrain
85 complaintsFuel system
75 complaintsEngine
50 complaintsOther or unknown
42 complaintsBrakes
9 complaintsVehicle speed control
8 complaintsSteering
5 complaintsVisibility (wipers, defrost, mirrors)
4 complaintsAir bags
2 complaintsBody and structure
2 complaintsElectronic stability control
1 complaints
← All problems reported for the 2018 Chevrolet Volt
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