Reliability, what owners report, and what it costs to keep.
AVOIR's read: the numbers are mixed and the complaint record is worth reading before you commit.
Owners have filed 299 complaints with NHTSA about the 1998 Pontiac Bonneville, and it carries 2 recalls. These are owner allegations rather than confirmed defects, but the pattern of what people complain about is the most useful signal a used buyer has.
| Area | Complaints | Share |
|---|---|---|
| Engine and engine cooling | 179 | 60% |
| Fuel system | 22 | 7% |
| Electrical system | 14 | 5% |
| Engine and engine cooling | 8 | 3% |
| Power train | 7 | 2% |
| Unknown or other | 6 | 2% |
| Steering | 5 | 2% |
| Visibility | 5 | 2% |
| Engine and engine cooling | 4 | 1% |
| Engine | 3 | 1% |
Verbatim from NHTSA complaint records, trimmed for length.
ENGINE COMPARTMENT FIRE APPROXIMATELY 30 MINS AFTER SHUTDOWN. INCIDENT 2015-00001363
NHTSA complaint: Engine
THE BACK TWO CRADLE MOUNTS ON BOTH SIDES RUSTED OUT AND MOUNTS PULLED THROUGH THE CRADLE CAUSING THE STEERING TO BECOME LOOSE FILLING AND CAUSING STEERING TO BE OUT OF ALIGNMENT AND WHEN HIT BRAKES FRONT WOULD DART ONE W
NHTSA complaint: Steering
MY CAR HAS BEEN STOLEN FROM SIOUX FALLS RESIDENTS HOME JULY 10 TH BUT HAVE A POLICE REPORT [XXX] BEEN SPOTTED IN MITCHELL OFF INTERSTATE 90 FIRST PARKING LOT RIGHT AFTER EXIT 90 INTO MITCHELL TANISH COLOR TRUNK HAS BUNN
NHTSA complaint: Suspension
I WAS DRIVING ON THE NEW YORK THRUWAY AND ALL OF A SUDDEN, MY CAR SHUT OFF. I HAD TO POWER STEER, NO POWER BRAKES, THE FUEL GAUGE READ NO FUEL AND THE BELLS WENT OFF. I HAD TO TRY TO GET TO A SAFE PLACE AND RESTART MY
NHTSA complaint: Vehicle speed control
ON MULTIPLE OCCASIONS I HAVE PULLED TO A DEAD STOP AT A LIGHT AND DURING THE IDLING TIME THE ENGINE SHUTS OFF AND IT WILL NOT START AGAIN. VERY EMBARRASSING SET OF TRIPS TO NEARBY GROCER. .. *TR
NHTSA complaint: Fuel system
TL* THE CONTACT OWNS A 1998 PONTIAC BONNEVILLE. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 40 MPH, THE POWER STEERING SUDDENLY FAILED CAUSING THE STEERING WHEEL VERY DIFFICULT TO TURN. THE CONTACT LOST CONTROL O
NHTSA complaint: Steering
AS I WAS DRIVING ALONG THE ENGINE, POWER STEERING, AND BRAKES FAILED. I HAD TO RESTART THE CAR AND HOPEFULLY RESUME DRIVING SO THE CAR COMING BEHIND ME DID NOT CRASH INTO ME. THIS HAS HAPPENED NUMEROUS TIMES SINCE INCL
NHTSA complaint: Steering
TL* THE CONTACT OWNS A 1998 PONTIAC BONNEVILLE. THE CONTACT STATED THAT WHILE DRIVING 65 MPH, THE VEHICLE STALLED WITHOUT WARNING. THE CONTACT WAS ABLE TO RESTART THE VEHICLE AND IT WAS TAKEN TO A DEALER. THE TECHNICIAN
NHTSA complaint: Engine
NHTSA lists 2 recall campaigns for the 1998 Pontiac Bonneville. Recalls are free to have fixed at a franchised dealer regardless of who owns the car now, but only if they were never done, so check the VIN of the specific car rather than trusting the model.
SABERSPORT IS RECALLING 16,270 COMBINATION CORNER AND BUMPER LAMP ASSEMBLIES OF VARIOUS PART NUMBERS SOLD FOR USE AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES. THESE HEADLAMPS FAIL TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, "LAMPS, REFLECTIVE DEVICES
Risk: DECREASED LIGHTING VISIBILITY MAY RESULT IN A VEHICLE CRASH.
Fix: SABERSPORT WILL NOTIFY OWNERS AND OFFER A FULL REFUND FOR THE NONCOMPLIANT COMBINATION LAMPS. THE SAFETY RECALL BEGAN ON MAY 11, 2009. OWNERS MAY CONTACT SABERSPORT AT 1-909-598-7589.
ON CERTAIN PASSENGER VEHICLES EQUIPPED WITH 3800 V6 (L36) ENGINES AND CERTAIN DELPHI FUEL PRESSURE REGULATORS, THE REGULATORS HAVE A MUCH HIGHER THAN USUAL RATE OF FUEL LEAKS. A LEAK CAN ALLOW FUEL TO ENTER THE INTAKE MANIFOLD THROUGH A VACUUM LINE. IF THE ENGINE DOES NOT START WHEN CRANKED, THE
Risk: THE BACKFIRE CAN RUPTURE THE INTAKE MANIFOLD. THE RUPTURE OF THE INTAKE MANIFOLD CAN DISPLACE A FUEL LINE, PULLING AN INJECTOR OUT OF PLACE, AND CAUSING A FUEL LEAK AND POSSIBLE FIRE.
Fix: DEALERS WILL INSTALL NEW FUEL PRESSURE REGULATORS WITH IMPROVED DIAPHRAGMS. THE RECALL WILL BE CONDUCTED IN PHASED MAILINGS. PHASE 1 BEGAN ON JUNE 30, 2004, AND PHASE 2 BEGAN ON SEPTEMBER 30, 2004.
| Reliability raw | 70 | good |
|---|---|---|
| Longevity est. | 73 | good |
| Maintenance | 75 | good |
| Depreciation | 60 | average |
| Performance | 59 | average |
| Efficiency | 38 | below average |
Percentile ranks against other midsize & large cars in the catalog.
What stands behind each score for this car:
Owners have filed 299 complaints with NHTSA for this model-year, and engine and engine cooling is the most reported area with 179 of them (60%). There are 2 recalls on record. Check any specific car against its VIN before buying.
AVOIR scores its reliability 70/100 (good) from NHTSA recall campaigns and complaint density. That figure is a raw complaint count, not yet adjusted for sales volume, so a high-volume model scores worse than it deserves.
AVOIR scores its longevity 73/100, but that figure is an estimate built from the powertrain and the brand's record, not a measurement. A 1998 car has no 200,000-mile population to observe yet, so treat it as a prior rather than evidence.
AVOIR's read: be careful, because the numbers are mixed and the complaint record is worth reading before you commit. Its overall ownership score is 66/100. Condition, mileage and service history still matter more than any score, so get a pre-purchase inspection on the specific car.
Sources: NHTSA recalls and complaints, EPA fuel economy, IIHS awards, and live market listings. A score describes a model-year, not the individual car in front of you. Get a pre-purchase inspection.