2000-2005 Pontiac Bonneville Reliability Score: 6.8 out of 10

538 NHTSA Complaints

4 Recalls

51 Fire Reports

20 Crash Reports

Reliability Score

6.8 / 10

Reliability score

About as many oil consumption, fuel-in-oil and overheating complaints as similar full-size sedans

A score of 7.0 means as many complaints as similar vehicles. Based on complaints owners filed with NHTSA about the engine, transmission or drivetrain.

Research found a documented powertrain problem on some model years or one engine that the score only partly reflects. See "On the record" below.

Complaints of oil consumption, fuel in the oil or overheating run well above similar vehicles and pull this score down.

Owners filed 177 powertrain complaints. A typical full-size sedan fleet of this size and age would have drawn about 231.

Scores this low have often eased: the three years after looked about 0.8 points better in the typical case.

Breakdown

Complaints overall177 complaints against about 231 for similar vehicles

7.7

Last three years

n/aNot enough data

Engine, transmission or drive unit failed or replaced24 complaints against about 46 for similar vehicles

8.4

Oil consumption, fuel in the oil or overheating16 complaints against about 8 for similar vehicles

5.2

Each line scores one view of the same complaints the same way, so the lines overlap. The mark on each bar is 7.0, as many complaints as similar vehicles. A line shows a number once similar vehicles would draw at least 5 of its complaints (20 for the last three years).

What owners describe

Of the 16 oil consumption, fuel-in-oil and overheating complaints, 10 describe overheating, a blown head gasket or coolant loss; 5 describe burning or losing oil; 1 describes fuel in the oil. One complaint can describe more than one.

“3/13/2007 coolant leak in lower and upper gaskets at 65,600 miles. Required removal and replacement of lower and upper gaskets and upper intake manifold. Evidently a gm problem with gaskets. $700 repair on car that has been well taken care of by original owner and only driver of…” 2002 model year

“The contact owns a 2002 pontiac bonneville. The contact smelled burning motor oil coming from the engine. A report was filed with the manufacturer and they advised the contact to have the dealer diagnose the vehicle. He will be notified of their decision on whether or not they…” 2002 model year

By model year

20007.1
20017.0
20028.2
20038.1
20048.8
20058.7

Similar vehicles are others in the same class, compared at the same age and in the same years. The score counts complaints owners filed with NHTSA, per vehicle built, which is different from the share of vehicles that fail. How the score is worked out

On the record · researched

Class settlementSadowski v. General Motors, HG03093843 (Cal. Super. Ct., Alameda); Dex-Cool intake gasket

1995-2004 3.8L L36; 1995-2003 3.1L/3.4L built before 2003-04-10 · reimbursement within 7 years / 150,000 miles source

Recall04V090

2000

Engineering analysisEA07008

Engine compartment fire · opened 2007, closed 2008, led to recall 09V116

Engineering analysisEA02030

Engine compartment fires · opened 2002, closed 2004, led to recall 04V090

Complaints by Engine Code

Every complaint of any kind (brakes, airbags, electrical and the rest) whose VIN names the engine, across all model years. The score above counts only engine, transmission and drivetrain complaints, so its figures for the same engine are smaller. Fire, injury and death figures count complaints that report one.

L36

3.8L 6-cyl

319 complaints 53.2 per year

31 fire reports

View details

Complaint Breakdown

steering

engine

electrical

other

cooling

Same engine used in

BUICK Park Avenue (2000-2005)BUICK LeSabre (2000-2005)CHEVROLET Monte Carlo (2000-2007)CHEVROLET Impala (2000-2005)CHEVROLET Camaro (2000-2002)

L67

3.8L 6-cyl

110 complaints 27.5 per year

10 fire reports

View details

Complaint Breakdown

steering

engine

electrical

cooling

other

Same engine used in

BUICK Park Avenue (2000-2005)CHEVROLET Monte Carlo (2000-2007)CHEVROLET Impala (2000-2005)

Pontiac Bonneville Unidentified Engine

93 complaints 15.5 per year

9 fire reports

View details

Complaint Breakdown

electrical

other

engine

steering

cooling

LD8

4.6L 8-cyl

13 complaints 6.5 per year Gasoline

View details

Complaint Breakdown

steering

electrical

engine

transmission

brakes

Same engine used in

CADILLAC DeVille (2000-2005)BUICK Lucerne (2006-2011)CADILLAC DTS (2006-2011)CADILLAC Eldorado (2000-2002)CADILLAC Seville (2000-2004)

Show 1 additional engine variant with limited data

These engines appear in fewer than 10 owner complaints. A low count can mean a clean record, and it can also be a VIN-decode anomaly in NHTSA's data.

3.8-V6-Gas

3.8L 6-cyl

3 complaints 1.5 per year

1 fire report

View details

Complaint Breakdown

engine

cooling

transmission

other

Owner Complaints by System

Complaints owners filed with NHTSA about the Pontiac Bonneville, counted across every engine. A complaint can name more than one system.

Steering: 117 owner complaints

Engine: 107 owner complaints

Electrical System: 94 owner complaints

Cooling System: 76 owner complaints

Transmission: 51 owner complaints

What to check on a used 2000-2005 Pontiac Bonneville

On a used 2000-2005 Pontiac Bonneville, the systems with the most NHTSA owner complaints are the steering (117), the engine (107) and the electrical system (94). Each one has an inspection step below, with counts as of 2026-10-09. A complaint is an owner report, not a confirmed defect, and counts rise with sales.

Turn the wheel from lock to lock while parked, then drive straight on a level road with a light grip.Safety. NHTSA has 117 owner complaints on the 2000-2005 Pontiac Bonneville about the steering.
Start the engine cold and listen for the first 30 seconds, then again at idle once it is warm.Costly repair. NHTSA has 107 owner complaints on the 2000-2005 Pontiac Bonneville about the engine, all engines combined.
Switch on every electrical item in turn: lights, windows, locks, wipers, climate fan, screen and power outlets.Costly repair. NHTSA has 94 owner complaints on the 2000-2005 Pontiac Bonneville about the electrical system.
With the engine cold, check the coolant level and color, then watch the temperature gauge on the drive.Costly repair. NHTSA has 76 owner complaints on the 2000-2005 Pontiac Bonneville about the cooling system, all engines combined.
Accelerate gently through every gear, then once at full throttle. Shift into Reverse and back to Drive.Costly repair. NHTSA has 51 owner complaints on the 2000-2005 Pontiac Bonneville about the transmission and drivetrain, all engines combined.

Open the full inspection checklist for the 2000-2005 Pontiac Bonneville

Recalls (4)

04V090000Feb 24, 2004serious

Fuel System

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.

03V238000Jul 1, 2003serious

Fuel System

ON CERTAIN CADILLAC DEVILLE AND SEVILLE PASSENGER VEHICLES, FUNERAL COACHES, AND LIMOUSINES EQUIPPED WITH A V8 (4.6L) ENGINE, OLDSMOBILE AURORA PASSENGER VEHICLES EQUIPPED WITH A V8 (4.0L ) ENGINE, AND PONTIAC BONNEVILLE SSEI PASSENGER VEHICLES EQUIPPED WITH A SUPERCHARGED V6 (3.8L) ENGINE, THE FUEL TANK PRESSURE SENSORS ARE UNUSUALLY SUSCEPTIBLE TO MALFUNCTIONS. IF THE SENSOR MALFUNCTIONS, EXCESSIVE VACUUM CAN BE APPLIED DURING SELF-DIAGNOSTIC TESTING.

02V222000Aug 9, 2002cosmetic

Air Bags

CERTAIN PASSENGER, MINI VANS, AND SPORT UTILITY VEHICLES HAVE AN AIR BAG INFLATOR ON THE DRIVER'S SIDE THAT COULD FRACTURE AT A WELD DURING A DEPLOYMENT.

00V114000Apr 17, 2000cosmetic

Service Brakes

VEHICLE DESCRIPTION: PASSENGER VEHICLES. SOME OF THESE VEHICLES HAVE INTERNAL FLUID LEAKS IN THE BRAKE HYDRAULIC CONTROL UNIT.

Alternatives in Full-Size Sedan

Lexus

2001-2006

9.7/10

5 engines / 194 complaints

3 engines / 215 complaints

3 engines / 28 complaints

4 engines / 388 complaints

4 engines / 134 complaints

7 engines / 1,015 complaints

Frequently Asked Questions

What are the most common 2000-2005 Pontiac Bonneville complaints?

Owners have filed 538 complaints with NHTSA about the 2000-2005 Pontiac Bonneville. The systems they name most often are the steering, the engine and the electrical system.

Is the 2000-2005 Pontiac Bonneville a good used car?

That depends on the model year, the mileage and the maintenance history of the car in front of you. Owners have filed 538 complaints with NHTSA about the 2000-2005 Pontiac Bonneville. Check which systems they name most often and whether a recall is still open on that car.

How many NHTSA complaints does the 2000-2005 Pontiac Bonneville have?

NHTSA has 538 owner complaints on file for the 2000-2005 Pontiac Bonneville as of the latest data pull. A complaint is an owner's report, not a confirmed defect, and counts rise with sales.

What recalls affect the 2000-2005 Pontiac Bonneville?

NHTSA lists 4 recalls covering some 2000-2005 Pontiac Bonneville vehicles. Which ones apply depends on the VIN: enter it at nhtsa.gov/recalls to see the open campaigns on a specific car.

What should I check before buying a used Pontiac Bonneville?

Run the VIN through NHTSA's recall lookup and confirm every open recall has been done. Look hardest at the steering, the engine and the electrical system, the systems owners complain about most. Ask for maintenance records, have an independent mechanic inspect the car and run a vehicle history report for prior accidents and title issues.

Does the Bonneville have NHTSA crash test ratings?

NHTSA has not published crash test ratings for the 2000-2005 Pontiac Bonneville. Not all vehicles are tested each year. For the latest NHTSA safety information, visit nhtsa.gov/ratings.

Data from NHTSA federal complaints database. 538 complaints analyzed. Data confidence: high. Last updated: 2026-10-18.