2015 Buick Regal problems & reliability
33 owner complaints filed with NHTSA for the 2015 Buick Regal. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
2 complaints report injuries (3 injured).
Federal crash records (FARS 2020–2023): 2015 Buick Regal vehicles were involved in 11 fatal crashes with 10 occupant deaths. Involvement counts are not adjusted for how many are on the road and do not imply fault or a vehicle defect.
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Engine | 9 | 27% |
| Exterior Lighting | 8 | 24% |
| Electrical System | 5 | 15% |
| Unknown OR Other | 5 | 15% |
| Fuel/propulsion System | 4 | 12% |
| Air Bags | 3 | 9% |
| Electronic Stability Control (esc) | 2 | 6% |
| Seat Belts | 2 | 6% |
| Service Brakes | 2 | 6% |
| Structure | 2 | 6% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Mileage when problems occurred
Half of the failures with a reported odometer reading occurred by 36,250 miles (middle 50% between 18,675 and 64,835 miles), based on 20 complaints that included mileage.
Complaints by incident year
What owners report
“The contact owns a 2015 Buick Regal. The contact stated while driving at an undisclosed speed, upon reaching a stop light, the vehicle inadvertently lost motive power and was able to restart. After restarting the vehicle, the vehicle returned to normal functionality, but the failure became a regular occurrence. The…”
Engine · filed Jul 26, 2024
“Excessive oil consumption on the 2.4L engine. GM has known about the oil consumption on these engines for a long time and if oil is not consistently checked and topped off it will seize the motor while driving”
Engine · filed May 23, 2024
“After starting my vehicle with foot on the brake and putting the vehicle in gear it will move forward and occasionally roll for 4 or 5 feet before the brake engages. This is extremely dangerous as I'm pulling out of a parking space and merging with ongoing traffic !This has been going on for approximately three weeks…”
Service Brakes · filed May 4, 2024
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Technical service bulletins
1,525 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2015 Buick Regal. The 10 most recent:
PI to help diagnose A/C concern
PIT5099J · Service Bulletin/Repair Instructions · issued Jul 21, 2026
This document provides the technician with a diagnostic tip if the vehicle stalls and set diagnostic trouble code P0191 and may also set P0172. The diagnostic tip has the technician inspect the high pressure fuel pump…
PIP6113 · Service Bulletin/Repair Instructions · issued May 19, 2026
This preliminary information communicates information about how to determine if a wheel and tires size change is available.
PIT3271Q · Service Bulletin/Repair Instructions · issued Apr 1, 2026
This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.
PIP6104 · Service Bulletin/Repair Instructions · issued Mar 9, 2026
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
PIP4902V · Service Bulletin/Repair Instructions · issued Mar 9, 2026
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
PIP4902U · Service Bulletin/Repair Instructions · issued Jan 8, 2026
This Preliminary Information communication provides information to the technician about vehicles that have had multiple repair attempts that are being performed on customer’s vehicles that exhibit vibration conditions…
PIT5214G · Service Bulletin/Repair Instructions · issued Nov 20, 2025
New Vehicle Monitoring Programs Section in IVH
13598 · Other · issued Sep 9, 2025
This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
18-NA-180 · Service Bulletin/Repair Instructions · issued Sep 4, 2025
Provide info on that parts restriction ending for the rear diff clutch control 19435910
PIP6027A · Service Bulletin/Repair Instructions · issued Aug 27, 2025
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
No NHTSA recall campaigns name the 2015 Buick Regal in our current data. Recalls may apply only to certain VIN ranges — always confirm with a VIN check.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2015 Buick Regal?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.
- · Owners most often reported problems around 36,250 miles — budget accordingly if the car is approaching that mileage.