2015 Buick Regal Engine Problems
- Complaints
- 9about this part
- Share
- 27%of 33 total for the year
- Median mileage
- 54,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 9 complaints about the engine of the 2015 Buick Regal, 27% of the 33 complaints for this model year. Where a mileage was given, the median is 54,000 miles. 1 a fire, according to the filers.
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.
“I started experiencing excessive oil burn at around 85,000 miles. Since then, I have checked my oil biweekly to top off and keep at proper levels along with consistent oil changes as the oil gets dirty quickly. Dealerships before have told me that its normal for these engines. At 109,610 miles, I discovered a bad oil leak. I took the vehicle into an independent mechanic to diagnose and fix the problem. He determined that the vacuum pump had broken off into the engine which caused a seal problem for the top of the engine. …”
NHTSA complaint #11341888, filed 2020-07, 109,610 miles“I started experiencing excessive oil burn at around. Since then, I have checked my oil biweekly to top off and keep at proper levels along with consistent oil changes as the oil gets dirty quickly. Dealerships before have told me that its normal for these engines. I discovered a bad oil leak. Vacuum pump issues. Multiple camshaft seals worn away, that were hard as rock from excessive heat including piston seals that had been affected. Thought this possibly had fixed the excessive oil burn. A few weeks later I received the oil level low notification on the car computer. …”
NHTSA complaint #11400008, filed 2021-03, 12,000 miles“Engine has gone out twice within 54k miles. Service tech said this is a know issue with the 2015 Buick Regal engine. I just had it replaced the 2nd time in feb of 2020. First time it went out there was only 12k miles on it. Now its nov. Of 2020 and the car is having the same exact issues as it was when both engines went out. I cannot believe this is happening a third time. This is not fair as a consumer to purchase a new car with barely any mileage and the engine keeps going on. I was on the freeway the last time. Worst possible timing ever. This is like a never ending really expensive issue”
NHTSA complaint #11375902, filed 2020-11, 54,000 miles“On 10/10/2018 at 6:45 am, 63 degrees fahrenheit, certified/current lpt warranty/15' Regal prem 2/ 60,600 od 2.0l/turbo/automatic trans, conditions-speed-10 MPH-steering straight, brake at 100%, engine performance issues manifested during the end portion of the trip while in drive, at idle, dropping off friend at his workplace parking lot. …”
NHTSA complaint #11140152, filed 2018-10, 2 miles“The contact owns a 2015 Buick Regal. While stopped at a traffic light, the vehicle began to putter and hesitate while accelerating. The failure occurred randomly. The dealer diagnosed that the engine fractured and needed to be replaced. The vehicle was repaired; however, the contact heard a grinding noise. The vehicle was not diagnosed or repaired. The manufacturer was notified. The failure mileage was approximately 50,000.”
NHTSA complaint #10935079, filed 2016-12, 50,000 milesRelated service bulletins
- 11026017Jun 5, 2025This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.
- 11024485May 15, 2025The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the…
- 11020254May 7, 2025This service bulletin provides information to dealership personnel for new vehicles with less than 1,000 miles that may not pass California smog inspection or smog inspection in…
- 11017263Mar 25, 2025This bulletin advises the technician to flush the cooling system multiple times if oil has been found in the cooling system and replace the parts that may be contaminated due to…
- 11016942Mar 4, 2025This bulletin advises the technician to flush the cooling system multiple times if oil has been found in the cooling system and replace the parts that may be contaminated due to…
- 11014230Jan 31, 2025This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
- 11014233Jan 30, 2025This 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…
- 11013069Jan 9, 2025This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
- 11011900Nov 22, 2024This diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.
- 11011709Nov 5, 2024This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
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 2015 Buick Regal
8 complaintsElectrical system
5 complaintsOther or unknown
5 complaintsFuel system
4 complaintsAir bags
3 complaintsBrakes
2 complaintsElectronic stability control
2 complaintsSeat belts
2 complaintsBody and structure
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsWheels
2 complaintsLatches, locks and linkages
1 complaints
← All problems reported for the 2015 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