2004 Buick Regal Engine Problems
- Complaints
- 18about this part
- Share
- 27%of 66 total for the year
- Median mileage
- 97,650miles
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA recorded 18 complaints about the engine of the 2004 Buick Regal, 27% of the 66 complaints for this model year. Where a mileage was given, the median is 97,650 miles. 2 a fire, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“How long does the NHTSA allow GM to fix recall 15757? It appears that GM is just waiting consumers out because of the age of vehicles, I.e., affected units are probably being taken out of service and the longer GM waits, more of their responsibility naturally goes away. I called the Buick recall hotline and they stated that they had no idea when a fix would be issued.”
NHTSA complaint #10836306, filed 2016-02, 140,000 miles“Driving down the road at 30 MPH without notice the car turned off with no apparent reason. Causing the car to loose power steering, power brakes, and rapid loss of speed in a busy downtown setting. This has happened 4 other times since then. We have read other complaints on forums recently and everyone who has replaced their ignition switch has not had a problem since. We would like this investigated because buicks are not on the list at this time for the national recall.”
NHTSA complaint #10576480, filed 2014-04, 130,000 miles“My 2004 Buick Regal always had oil dripping from the engine since I bought it. The car ran beautifully for the 1st year with regular maintence. During a snow storm I noticed oil was leaking worse and starting to smell and smoke. Immediately I took it to get repaired. At this service the oil sending unit was replaced along with someother maintence on the fuel injectors I was also informed that oil was dripping from my engine gaskets and causing the smell. He informed me that it wasnt a problem for now and ill be ok. …”
NHTSA complaint #10817359, filed 2016-01, 208,000 miles“The contact owns a 2004 Buick Regal. The contact stated that the engine would shut off while the vehicle was in operation. The vehicle was able to restart by using the key fob, but would shut back off when the key was inserted in the ignition. The vehicle was taken to an independent mechanic to be diagnosed, but a failure was not found. The dealer and manufacturer were not contacted. The vehicle was not repaired. The failure mileage was 97,000.”
NHTSA complaint #11162188, filed 2018-12, 97,000 miles“The contact owns a 2004 Buick Regal. The contact stated that while driving 68 MPH, the vehicle stalled without warning due to a short in the ignition. In addition, the contact mentioned that after the failure occurred, the vehicle failed to switch gears. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was 73,000. Updated 03/09/16”
NHTSA complaint #10811113, filed 2015-12, 73,000 milesRelated service bulletins
- 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…
- 10242298Aug 10, 2023This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308…
- 10211658May 2, 2022This service bulletin provides policy information on warranty administration guidelines for multiple repairs with independent causes (GM Canada Dealers Only).
- 10178387Jul 27, 2020This Preliminary Information communication provides information to the technician about finding needle bearings during an oil change. Technician will gain access to the roller…
- 10176326May 21, 2020This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308…
- 10176607May 8, 2020This technical 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…
- 10167437Oct 14, 2019This Preliminary information communicates to the technician the need to inspect the induction system for potential icing issues in very cold ambient temperatures. To allow the…
- 10160987May 7, 2019This Preliminary Information communication provides information to the technician to not remove the torque converter bolts and start the engine as this may cause damage to the…
- 10160983May 6, 2019This Preliminary Information communication provides information to the technician about finding needle bearings during an oil change. Technician will gain access to the roller…
- 10144451Aug 8, 2018This Preliminary Information communication provides information to the technician about engine block of possible cylinder bore damage, scoring or out of round as the possible…
Engine: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2019 | 3 | 15% |
| 2018 | 5 | 26% |
| 2016 | 5 | 12% |
| 2015 | 9 | 27% |
| 2014 | 9 | 24% |
| 2013 | 9 | 10% |
| 2012 | 21 | 23% |
| 2011 | 108 | 39% |
| 2004 | 18 | 27% |
| 2003 | 26 | 26% |
| 2002 | 33 | 28% |
| 2001 | 52 | 28% |
| 2000 | 28 | 15% |
| 1999 | 49 | 20% |
| 1998 | 29 | 10% |
| 1997 | 11 | 8% |
| 1996 | 2 | 1% |
| 1995 | 1 | 1% |
| 1994 | 1 | 1% |
| 1992 | 1 | 1% |
Other parts of the 2004 Buick Regal
35 complaintsEngine cooling
8 complaintsSteering
6 complaintsElectronic stability control
5 complaintsBrakes
4 complaintsOther or unknown
3 complaintsTransmission and drivetrain
3 complaintsSuspension
2 complaintsVehicle speed control
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsAir bags
1 complaintsExterior lighting
1 complaints
← All problems reported for the 2004 Buick Regal
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