NHTSA lists 5 safety recalls and 104 owner complaints for the 2003 Buick Regal. Most complaints involve electrical system (36) and engine (26). The EPA rates it 19–20 mpg combined.
General Motors LLC (GM) is recalling certain model year 1998-1999 Chevrolet Lumina and Oldsmobile Intrigue, 1997-2004 Buick Regal and Pontiac Grand Prix, 2000-2004 Chevrolet Impala, and 1998-2004 Chevrolet Monte Carlo vehicles. The affected vehicles were previously repaired under recalls 08V-118, 09V-116, and 15V-201 to address the possibility that engine oil may drip onto the hot exhaust manifold.
GENERAL MOTORS IS RECALLING 1,497,516 MY 1997-2003 BUICK REGAL, MY 1998-2003 CHEVROLET LUMINA, MONTE CARLO AND IMPALA, MY 1998-1999 OLDSMOBILE INTRIGUE, MY 1997-2003 PONTIAC GRAND PRIX VEHICLES EQUIPPED WITH A 3.8L V6 NATURALLY ASPIRATED ENGINE. SOME OF THESE VEHICLES HAVE A CONDITION IN WHICH DROPS OF ENGINE OIL MAY BE DEPOSITED ON THE EXHAUST MANIFOLD THROUGH HARD BRAKING.
DORMAN IS RECALLING 979 STEERING KNUCKLES, DORMAN P/NOS. 697-902 AND 697-903, SOLD UNDER DORMAN'S "OE SOLUTIONS<SUP>TM</SUP>" BRAND NAME, AND NAPA P/NOS. 7-8502 AND 7-8503 WHICH WERE SOLD FOR REPLACEMENT USE ON THE VARIOUS VEHICLES LISTED ABOVE. A POTENTIAL MATERIAL OR DESIGN DEFECT COULD RESULT IN THE STEERING KNUCKLE BREAKING IN THE HUB AREA.
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
Complaints for each Regal model year we’ve synced.
| Model year | NHTSA complaints |
|---|---|
| 1996 | 207 |
| 1998 | 312 |
| 1999 | 252 |
| 2000 | 196 |
| 2001 | 194 |
| 2002 | 129 |
| 2003 | 104 |
| 2004 | 66 |
| 2011 | 280 |
| 2012 | 92 |
| 2013 | 91 |
| 2014 | 38 |
| 2015 | 33 |
| 2016 | 41 |
| 2017 | 20 |
| 2018 | 19 |
| 2019 | 20 |
| 2020 | 2 |
“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.”
“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.”
“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”
Towing, payload and dimensions aren’t in the EPA or NHTSA data, so we don’t list them.
| Version | City | Hwy | Comb. | Fuel / yr | CO₂ g/mi |
|---|---|---|---|---|---|
| Regal Auto 4-spd, 6 cyl, 3.8 L · Front-Wheel Drive | 17 | 27 | 20 | $3,100 | 444 |
| Regal Auto 4-spd, 6 cyl, 3.8 L, Sup Charg · Front-Wheel Drive | 16 | 25 | 19 | $4,050 | 468 |
| Item | Miles | Time | Note |
|---|---|---|---|
| Engine oil & filter | 5,000–10,000 mi | 6–12 months | Follow the oil-life monitor if fitted |
| Tire rotation | 5,000–7,500 mi | Every oil change | Check pressure monthly |
| Engine air filter | 15,000–30,000 mi | 1–2 years | Sooner in dusty areas |
| Cabin air filter | 15,000–25,000 mi | 1–2 years | |
| Brake fluid | — | 2–3 years | Absorbs moisture over time |
| Coolant | 60,000–100,000 mi | 5–10 years | Long-life coolants last longer |
| Spark plugs | 60,000–100,000 mi | — | Iridium/platinum plugs at the long end |
| 12V battery | — | 3–5 years | Heat shortens battery life |
5 safety recalls as of Nov 9, 2026, according to NHTSA. Recall repairs are free at a dealer. Check your VIN to see whether your car is included and whether the repair was done.
Owners filed 104 complaints with NHTSA. The most-cited components are electrical system (36), engine (26), engine and engine cooling (12). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.
The EPA rates the 2003 Buick Regal at 19–20 mpg combined, depending on engine and drivetrain (2 versions rated).