NHTSA lists 2 safety recalls and 39 owner complaints for the 2004 Buick Century. Most complaints involve exterior lighting (11) and air bags (6). 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 MULTI FUNCTION SWITCH DOES NOT WORK PROPERLY. WHEN GOING AROUND CURVES AND CORNERS YOU CAN'T DIM THE HEADLIGHTS. BECAUSE THE STEERING WHEEL DOESN'T ALLOW THE LEVER TO GO FAR ENOUGH TO CATCH. NOW MY HEADLIGHTS WILL NOT TURN ON WHEN THE THEY ARE SUPPOSE TO. MY CRUISE CONTROL DOESN'T WORK. MY A/C STOPS COOLING WHEN THE SPEED REACHES 60 MPH BUT IF I MOVE THE M.F.S. (AKA TURN SIGNAL) IT GETS COOL AGAIN FOR A FEW MINUTES. THE OTHER NIGHT MY LIGHTS WENT OFF WHEN I WAS MEETING A CAR WITH ITS HEADLIGHTS ON BRIGHT. IT WAS A DARK STRETCH OF ROAD. I ALMOST RAN IN THE DITCH.”
“TL* THE CONTACT OWNS A 2004 BUICK CENTURY. THE CONTACT STATED THAT WHILE HER SON WAS DRIVING AT APPROXIMATELY 35 MPH, THE AIR BAGS DEPLOYED INDEPENDENTLY WITHOUT WARNING. THE AIR BAG HIT THE CONTACT'S ARM AND FACE LEAVING MINOR MARKS AND BRUISES. THE DRIVER DID NOT SEEK MEDICAL ATTENTION FOR HIS INJURIES. THE CONTACT'S SON WAS ABLE TO PULL THE VEHICLE OFF TO THE SIDE OF THE ROAD AND THEN CALLED THE CONTACT. THE CONTACT ARRIVED AT THE SCENE AND DROVE THE VEHICLE HOME WITHOUT FURTHER INCIDENT. THE CONTACT STATED THAT THE WINDSHIELD AND DASHBOARD WERE DAMAGED. THE DEALER NOR THE MANUFACTURER HAD BEEN NOTIFIED OF THE FAILURE. THE VEHICLE HAD YET TO BE DIAGNOSED OR REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 156,000.”
“WHEN I TURN ON THE HIGH BEAMS THE HEADLIGHTS WILL OCCASIONALLY TURN OFF COMPLETELY, INSTEAD. TO TURN BACK ON THE VEHICLE'S HEADLIGHTS I HAVE TO PULL THE HIGH BEAM LEVER BACK AND FORTH MULTIPLE TIMES. WHEN ATTEMPTING TO TURN BACK ON THE HEADLIGHTS I ENGAGE THE HAZARDS SO THAT OTHER VEHICLES CAN STILL SEE ME ON THE ROAD. *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 | 27 | 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 39 complaints with NHTSA. The most-cited components are exterior lighting (11), air bags (6), electrical system (5). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.
The EPA rates the 2004 Buick Century at 21 mpg combined, depending on engine and drivetrain (1 version rated).