2018 Buick Enclave Fuel system Problems
- Complaints
- 5about this part
- Share
- 8%of 66 total for the year
- Median mileage
- 170,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 5 complaints about the fuel system of the 2018 Buick Enclave, 8% of the 66 complaints for this model year. Where a mileage was given, the median is 170,000 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.
“Buick not a year old, in our garage very strong odor of gasoline cannot let it inside the garage it smells strong going into house attached to garage!”
NHTSA complaint #11277945, filed 2019-11, 170,000 miles“I am submitting this letter to formally report two ongoing issues with my 2018 Buick Enclave. First, I have experienced persistent problems with the emissions purge valve. My vehicle has repeatedly triggered diagnostic trouble code P0496, indicating a malfunction in the purge valve system. I am aware that this issue has been the subject of recall campaigns for other Buick Enclave models; however, my vehicle has not been included in any such recall, despite exhibiting the same symptoms. …”
NHTSA complaint #11742783, filed 2026-06“I am the original owner of this Buick Enclave Avenir. I have had two near accident occurences when the car started foring the breaks while I was accellarating on the highway and was not behind another vehicle. The car behind me nearly rerended me. On 10/17/26, my purge valve was replaced for the third time, making this the fourth purge valve the car has had. After getting gas, the car will not start, which is an indicator the part has gone bad and needs to be replaced. In June of 2025 I took my car to Anderson Buick over concerns while accellerating. …”
NHTSA complaint #11771938, filed 2026-10“Check engine light was on due to the EVAP Purge Solenoid not sealing properly and causing a leak. Scan testing performed of the engine control module and diagnosed/cleared DTC P0496-00. Vehicle was brought to a dealership for repair.”
NHTSA complaint #11661835, filed 2025-05Related service bulletins
- 11017173Mar 21, 2025This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for analysis.
- 11007095Aug 7, 2024This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are recommended for use in all GM vehicles…
- 11004727Jun 29, 2024This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
- 11004761Jun 28, 2024This service bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or…
- 10253061Mar 4, 2024This Preliminary information communicates that when removing the fuel line jumper hose care should be taken to be sure the line is reinstalled correctly to avoid a no/low fuel…
- 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.
- 10246003Oct 16, 2023This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp on. Technician will…
Fuel system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2025 | 1 | 3% |
| 2023 | 3 | 14% |
| 2021 | 1 | 4% |
| 2020 | 8 | 13% |
| 2019 | 2 | 5% |
| 2018 | 5 | 8% |
| 2017 | 2 | 1% |
| 2016 | 2 | 1% |
| 2015 | 3 | 2% |
| 2014 | 5 | 2% |
| 2013 | 3 | 4% |
| 2012 | 8 | 6% |
| 2011 | 11 | 5% |
| 2010 | 11 | 4% |
| 2009 | 5 | 2% |
| 2008 | 10 | 2% |
Other parts of the 2018 Buick Enclave
21 complaintsTransmission and drivetrain
16 complaintsEngine
13 complaintsElectrical system
10 complaintsOther or unknown
8 complaintsForward collision avoidance
5 complaintsAir bags
2 complaintsBack-over prevention (rear camera)
2 complaintsEngine cooling
2 complaintsExterior lighting
2 complaintsSteering
2 complaintsBody and structure
2 complaints
← All problems reported for the 2018 Buick Enclave
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