NHTSA lists 2 safety recalls and 130 owner complaints for the 2003 Buick Century. Most complaints involve exterior lighting (48) and electrical system (24). The EPA rates it 21 mpg combined.
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.
CERTAIN DELPHI FUEL PRESSURE REGULATORS, P/NOS. FP10020-11B1, FP10026-11B1, AND FP10027-11B1, SOLD AFTER JANUARY 9, 2007, AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES LISTED ABOVE. THE UNIVERSAL PRESSURE REGULATORS (UPR) WERE PRODUCED WITHOUT AN O'RING AND RETAINER.
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
“THE VEHICLE'S GAS TANK WON'T HOLD MUCH AND CLICKS AS IF FULL. ALSO, WHEN ON UNEVEN PAVEMENT OR GROUND, THE ⛽ GAS WARNING LIGHT COMES ON, EVEN AFTER GAS WAS JUST PUT IN. IN ADDITION, AT TIMES I SMELL A "BURNING ELECTRICAL" SMELL AND THE HEADLIGHTS GO OUT, THE BRIGHTS FAIL TO "CLICK" ON OR GOES OFF BY ITSELF. THE TURN SIGNAL LIGHTS HAVE TO BE TURNED MANUALLY TO BLINK. ALL TURN SIGNAL LIGHTS HAVE BEEN REPLACED MULTIPLE TIMES AND THIS DOES NOT FIX THE PROBLEM. THE BACK TURN SIGNALS WORK AND LIGHT UP, BUT NOT THE FRONT & BLINK AT A FASTER RATE. EVEN ONE SIDE HEADLIGHT ENGAGEMENT WAS REPLACED AND THE PROBLEMS STILL EXIST.”
“HORN BUTTON IS PART OF AIR BAG. THE HORN BUTTON SHORTS OUT AND THE HORN BLOWS ALL THE TIME. HAVE TO REMOVE FUSE TO STOP HORN BLOWING. HAD TO REPLACE AIR BAG TO FIX. IN A FEW MONTHS THE PROBLEM REOCCURRED. ITS TOO EXPENSIVE TO REPLACE AIR BAGS SO I AM LEFT WITHOUT A HORN THIS IS A SAFETY ISSUE. CAN THE MANUFACTURER PROVIDE A FIX? THE INTERNET SHOWS THIS IS A VERY COMMON PROBLEM FOR A LOT OF GM CARS.”
“EVERY BUICK OWNER, I HAVE TALKED TO AT ABOUT 80,000 TO 100,000 MILES HAS TO REPLACE INTAKE MANIFOLD AND BOLTS. THIS IS ABOUT A $1200.00 JOB, GASKETS AND BOLTS SHOULD LAST A LOT LONGER. *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 |
|---|---|---|---|---|---|
| Century Auto 4-spd, 6 cyl, 3.1 L · Front-Wheel Drive | 18 | 26 | 21 | $3,050 | 423 |
| 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 |
2 safety recalls as of Oct 30, 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 130 complaints with NHTSA. The most-cited components are exterior lighting (48), electrical system (24), engine and engine cooling (15). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.
The EPA rates the 2003 Buick Century at 21 mpg combined, depending on engine and drivetrain (1 version rated).