Problems · NHTSA complaints
2003 Buick Regal problems
Owners filed 104 complaints about the 2003 Buick Regal with NHTSA between Nov 2002 and Aug 2023. The most-cited component is electrical system (36).
Complaints
104
Filed with NHTSA
Crashes
5
Reported by owners
Fires
14
Reported by owners
Injuries
7
People reported injured
Deaths
0
Reported to NHTSA
Complaints by component
One complaint can cite several components
- Electrical system36
- Engine26
- Engine and engine cooling12
- Steering10
- Service brakes7
- Power train7
- Wheels6
- Exterior lighting5
- Visibility4
- Service brakes, hydraulic4
- Air bags3
- Fuel/propulsion system2
- Seats2
- Vehicle speed control2
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
Data from NHTSA Complaints API · synced Nov 9, 2026NHTSA vehicle page
When complaints were filed
Does it get worse with age? Complaints per calendar year filed
1
3
3
4
1
8
4
5
2
5
2
1
23
9
22
5
4
0
1
0
0
1
View as table
| Model year | Complaints filed per calendar year |
|---|---|
| 2002 | 1 |
| 2003 | 3 |
| 2004 | 3 |
| 2005 | 4 |
| 2006 | 1 |
| 2007 | 8 |
| 2008 | 4 |
| 2009 | 5 |
| 2010 | 2 |
| 2011 | 5 |
| 2012 | 2 |
| 2013 | 1 |
| 2014 | 23 |
| 2015 | 9 |
| 2016 | 22 |
| 2017 | 5 |
| 2018 | 4 |
| 2019 | 0 |
| 2020 | 1 |
| 2021 | 0 |
| 2022 | 0 |
| 2023 | 1 |
Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.
Top problems in owners’ words
Verbatim from NHTSA complaints, newest first
Electrical system
36 reports2 fires
“UNANNOUNCED TO PURCHASERS, THE BUICK REGAL HAS A REDUNDANT AND DEFECTIVE SECURITY IGNITION SYSTEM THAT PREVENTS THE VEHICLE FROM BEING ABLE TO START WITH THE KEY AFTER THE BATTERY IS DISCONNECTED. IT MUST NOW BE TAKEN TO A DEALERSHIP TO BE DIAGNOSED AND FOR A COSTLY REPAIR. IT WAS STATIONARY, AND THE BATTERY DRAINED DOWN WITH A PHONE CHARGER HOOKED UP. EVEN FOLLOWING THE FACTORY KEY SEQUENCE, THE BATTERY RUNS DOWN BEFORE THE CODE CAN BE CLEARED AND RE-ESTABLISHED.”
Engine
26 reports1 crash10 fires
“I BACKED THE CAR IN DRIVE AND THE GUAGES WERE NORMAL. WHEN I GOT OUT I SAW A SMALL AMOUNT OF SMOKE COMING FROM UNDER CAR BUT WITHIN A MINUTE THERE WERE FLAMES COMING FROM UNDER THE CAR AND WITHIN A FEW MINUTES THE FLAMES WERE ABOVE THE CAR. I CALLED 911 WHEN I SAW FLAMES AND KNEW I WASN'T GOING TO BE ABLE TO PUT THE FIRE OUT MYSELF. THE FIRE DEPT ARRIVED, IT TOOK THEM AT LEAST 30 MINUTES TO PUT THE FIRE OUT. A COUNTY DEPUTY ARRIVED AND THERE IS A POLICE REPORT (I TRIED TO UPLOAD IT AND IT FAILED EACH TIME). THE DAMAGE HAS BEEN INSPECTED BY AN INSURANCE REPRESENTATIVE FROM THE OWNER OF THE HOUSE (UPLOAD FAILED.”
Engine and engine cooling
12 reports2 fires3 related recalls
“TL* THE CONTACT OWNS A 2003 BUICK REGAL. THE CONTACT STATED THAT THERE WAS A PRESENCE OF AN OIL LEAK WHICH PROGRESSED WITHOUT WARNING. THE CONTACT NOTICED A PUDDLE UNDER THE VEHICLE. THE CONTACT LATER RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 15V701000 (ENGINE AND ENGINE COOLING). THE DEALER WAS UNABLE TO SUPPLY THE PART FOR SEVERAL MONTHS. THE CONTACT WAS UNABLE TO DETERMINE WHEN THE MANUFACTURER WOULD BE ABLE TO SUPPLY THE PART TO THE DEALER. THE FAILURE MILEAGE WAS NOT AVAILABLE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE. UPDATED 05/11/16*LJ *TR”
Steering
10 reports2 related recalls
“MY 03 BUICK REGAL LS WILL SHUTOFF SOMETIMES WHEN TURNING LEFT, OR WHEN USING THE TURN SIGNAL. I CAN NOT FIND THE PAPERWORK, BUT I REMEMBER A RECALL FOR THIS ABOUT 5 TO 8 YEARS AGO. WE DID HAVE IT ADDRESSED, BUT THE PROBLEM HAS COME BACK. TODAY'S DATE IS 1/9/17 AND MY WIFE HAD THIS HAPPEN AGAIN TO HER ON 1/4/17 WHILE MAKING A LEFT HAND CURVE. SHE WAS NOT TURNING OR USING HER TURN SIGNAL. I ONLY HAD IT HAPPEN TO ME ONCE WHILE MAKING A LEFT TURN USING MY TURN SIGNAL. MY MOTHER ALSO HAS AN 03 REGAL GS AND ALSO EXPERIENCED THIS SAME PROBLEM. I CONTACTED THE DEALER WHERE I PURCHASED THE CAR AND THEY TOLD ME THERE IS NO CURRENT RECALL NOR WAS THERE EVER ONE FOR THIS PROBLEM, BUT I KNOW WE HAD IT ADDRESSED ABOUT 5 TO 8 YEARS AGO.”
Service brakes
7 reports1 crash
“TL* THE CONTACT OWNED A 2003 BUICK REGAL. WHILE DRIVING 5 MPH, THE BRAKES MALFUNCTIONED AND ANOTHER VEHICLE STRUCK THE PASSENGER SIDE OF THE CONTACT'S VEHICLE. THE AIR BAGS DID NOT DEPLOY. A POLICE REPORT WAS FILED. THE CONTACT SUSTAINED INJURIES TO THE BACK, THE ENTIRE RIGHT SIDE OF THE BODY, THE FOOT, AND THE NECK. MEDICAL ATTENTION WAS REQUIRED. THE VEHICLE WAS TOWED TO A DEALER. THE VEHICLE WAS DESTROYED. THE MANUFACTURER WAS NOT MADE AWARE OF THE ISSUE. THE FAILURE MILEAGE AND VIN WERE UNKNOWN. UPDATED 11/29/16*LJ UPDATED 12/13/16.*JB”
Power train
7 reports1 crash
“TL* THE CONTACT OWNS A 2003 BUICK REGAL. WHILE DRIVING 20 MPH, THE VEHICLE ACCELERATED INDEPENDENTLY WHEN THE ACCELERATOR PEDAL WAS NOT DEPRESSED. THE FAILURE RECURRED INTERMITTENTLY. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE POWER TRAIN CONTROL MODULE FAILED AND NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 82,000.”
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 9, 2026
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.