NHTSA lists 2 safety recalls and 284 owner complaints for the 1998 Pontiac Bonneville. Most complaints involve engine and engine cooling (196) and fuel system, gasoline (33). The EPA rates it 19–20 mpg combined.
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, AND ASSOCIATED EQUIPMENT." THESE LAMPS DO NOT CONTAIN THE REQUIRED AMBER SIDE REFLECTORS.
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 FUEL FROM THE LEAKING REGULATOR AND A MISTIMED SPARK CAN CAUSE A BACKFIRE.
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
“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 WAY OR THE OTHER AND LOTS OF NOISE COMING FROM UNDER VEHICLE FROM CRADLE BOUNCING WHEN HITTING BUMPS TRIED THE FIND ONE IN JUNK YARDS AND ALL ARE THAT WAY. *TR”
“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”
“ABOUT A WEEK PRIOR TO INCIDENT, I GOT A WHIFF OF A BURNING SMELL, 2 DAYS IN A ROW, SHORT QUICK SCENT. NEXT 4 DAYS, SMELLED NOTHING (EVEN DROVE CAR 80 MILES ONE WAY AND BACK). DAY OF INCIDENT, I WAS TRAVELING ABOUT 10 MPH WHEN WHITE SMOKE CAME FROM THE HEATER VENT. I INCREASED SPEED TO ABOUT 30 MPH TO GET TO A SAFE SPOT, AND BLACK SMOKE BILLOWED OUT OF HEAT VENT ON TOP OF DASHBOARD, AND FRONT OF DASHBOARD. TURNED CORNER TO GET OUT OF TRAFFIC, CAME TO A STOP AND FLAMES SHOT OUT OF CIGARETTE LIGHTER, AND AIR VENT IN FRONT OF DASH. HEATER WAS OFF, RADIO WAS OFF, AND CIGARETTE LIGHTER WAS NOT BEING USED. CAR FULLY ENGULFED IN APPROXIMATELY 2-3 MINUTES. CAR TOTALED. *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 |
|---|---|---|---|---|---|
| Bonneville Auto 4-spd, 6 cyl, 3.8 L · Front-Wheel Drive | 17 | 26 | 20 | $3,100 | 444 |
| Bonneville Auto 4-spd, 6 cyl, 3.8 L, Turbo, Sup Charg · Front-Wheel Drive | 16 | 25 | 19 | $3,300 | 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 |
2 safety recalls as of Nov 10, 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 284 complaints with NHTSA. The most-cited components are engine and engine cooling (196), fuel system, gasoline (33), electrical system (28). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.
The EPA rates the 1998 Pontiac Bonneville at 19–20 mpg combined, depending on engine and drivetrain (2 versions rated).