1993 Pontiac Bonneville Problems
- Complaints
- 138filed with NHTSA
- Median mileage
- 126,000miles, 10 complaints with mileage
- Recalls
- 1campaigns on record
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
- NHTSA crash rating
- —overall rating starts with 2011 models
- EPA fuel economy
- 20 mpgcombined, 3.8L 6-cyl FWD · 17 city / 26 hwy
Sources: NHTSA records for the 1993 Pontiac Bonneville (complaints, recalls, investigations), NHTSA crash tests, EPA fuel economy. Report an error
What owners report
Owners of this model year most often report brake problems, especially fluid leaks at the rear wheels that need cylinder repairs, along with ABS warning lights and intermittent braking concerns. A second cluster of complaints concerns the transmission oil cooler line rubbing or separating, which owners link to fluid loss and, in a few reports, a fire under the hood. Many reports come from cars well past 100,000 miles, though some brake complaints appear at low mileage.
- Brakes
Leaking rear wheel cylinders / brake fluid loss
- 11 complaints (8%)
- median 24,000 mi at 9.3 yrs old (1 states mileage, few)
- 1 mention a crash, fire or injury
- filed 1995–2005
Owners describe brake fluid leaking at the rear wheels, damaged brake shoes, and in some cases a pedal that sinks or braking that feels weak. Several say the wheel cylinders or master cylinder were replaced, and in some cases the same repair was needed again within about 10,000 to 15,000 miles. Others report the master cylinder was replaced after a loss of braking. Reported from roughly 21,000 to 41,000 miles in the lower-mileage reports, with some cars well past 100,000 miles.
What to check: Check the brake fluid level and look for wetness or corrosion at the rear wheels and along the brake lines; ask whether the wheel cylinders or master cylinder have been replaced and when.
2 excerpts from owner complaints in NHTSA records
“While driving down hill about 20 MPH, the brake warning light came on ,and the vehicle lost all power. Driver was able to steer the vehicle into a church parking lot safely. Vehicle taken to dealership, where master cyclinder was replaced.”
NHTSA complaint #830624, filed 1998-11“Right rear brake cylinder leaked and damanged the brake shoe. Consumer to the car to dealer, and dealer corrected problem at 21000. Currently, at36000 miles brake problem has reoccurred.”
NHTSA complaint #850144, filed 1999-10 - Brakes
ABS warning light or unintended ABS activation
- 27 complaints (20%)
- typically at 4.6 yrs old
- filed 1995–2001
Complaints describe the ABS warning light staying on or coming on intermittently, and in some cases the ABS engaging without the driver asking for it, with the pedal pulsing or the wheels locking briefly. Owners report the system was bled, repaired, or disconnected so the car could be driven. Reported across a wide mileage range, from under 50,000 to over 100,000 miles; several reports are from normal driving at low speed.
What to check: Turn the key and confirm the ABS light goes out, then test braking on a quiet road; ask whether the ABS has been serviced or the warning light has ever stayed on.
2 excerpts from owner complaints in NHTSA records
“Abs brake warning remains illuminated, indicating a malfunction within the system, cause unknown. Water pump and master cylinder replaced and system flushed then light went out and remained out. Has since begun illuminating intermittently upon startup and while driving.”
NHTSA complaint #833395, filed 1999-01“While driving the vehicle about 20 MPH, the anti- lock brake system engaged without application, causing all four wheels to lock up. The vehicle was towed to a repaired shop. The problem has been reported to the manufacturer.”
NHTSA complaint #825729, filed 1998-07 - Transmission and drivetrain
Transmission oil cooler line leaks or separates
- 16 complaints (12%)
- median 147,000 mi at 15.5 yrs old (3 state mileage, few)
- 5 mention a crash, fire or injury
- filed 1995–2009
Owners report transmission fluid leaking from a cooler line that rubs against a bracket near the engine, or a line that separates and sprays fluid. In a few reports the fluid reached hot exhaust parts and a fire followed. Some owners mention recall 96V015000 and uncertainty about whether their vehicle was covered. Reported from about 55,000 miles upward; one report ties line separation to cold-weather operation with heavy transmission load.
What to check: Ask whether recall 96V015000 was performed, and check the transmission cooler lines for rubbing, cracks, or fluid residue near the bracket and exhaust.
2 excerpts from owner complaints in NHTSA records
“Tranmission oil cooling lines, during normal operation, develop a hole due to to vibration/rubbing on a guide bracket which is mounted to the front of the engine block. Transmission oil leaks out, wetting down the underside of car and inner area of the front wheel, in the area of the disc brake. Car was serviced at seelye wright Pontiac, south haven, michigan, to replace pipe.”
NHTSA complaint #716820, filed 2000-01“Perfect woriking condition; half an hour after being parked the vehicle caught on fire under the hood. Consumer states recall 95-c-68 was completed in may of 1996 regarding the replacement of a cooler hose, consumer states this could have caused an engine fire.”
NHTSA complaint #804925, filed 1996-11 - Body and structure
Engine cradle corrosion and separation
- 5 complaints (4%)
- median 147,000 mi at 16.5 yrs old (3 state mileage, few)
- filed 2000–2011
Owners describe the front or rear engine cradle rusting through at the mounting points, then dropping or detaching, sometimes with a loud clunk and a loss of steering. Some report the steering column or rack was affected afterward. Repairs were often not completed, and owners say they were advised the car should not be driven. Mostly reported on cars past 100,000 miles, often in rust-belt conditions.
What to check: Have the cradle and subframe mounting points inspected from below for rust-through or cracks before buying, especially on a car from a snowy region.
2 excerpts from owner complaints in NHTSA records
“1993 Pontiac Bonneville (3.8l) rear engine cradle rotted at all for bolt points causing rear of engine cradle to fall out of the car causing steering issues and an eventual loss of steering. 1.) driving down normal paved city street. Began turning a corner. (extremely lucky this happened at low speeds on a city street. If this happened on the freeway serious injury could have taken place) 2.) failure occurred once. Any failure causing steering loss is one too many. …”
NHTSA complaint #10265058, filed 2009-04, 147,000 miles“While driving 25 MPH front frame dropped. Consumer managed to pull over, and had the vehicle towed. Dealership was notified, but did not resolve the problem.”
NHTSA complaint #10072078, filed 2004-05 - Seat belts
Rear seat belts stuck or not retracting
- 8 complaints (6%)
- median 79,800 mi at 11.4 yrs old (1 states mileage, few)
- 1 mention a crash, fire or injury
- filed 1995–2004
Owners report rear seat belts that will not pull out or will not retract, and a front buckle that jammed and had to be cut to get out of the car. In several cases the dealer replaced the belt assembly; one owner was told the rear belts had to be replaced. Reported across a range of mileages, from around 80,000 miles upward, and described as a mechanical jam rather than crash-related.
What to check: Pull every seat belt fully out and let it retract, and check that each buckle latches and releases cleanly.
2 excerpts from owner complaints in NHTSA records
“Involved in head-on collision, mva. The air bag deployed being a disabled firefighter/paramedic I am an advid wearer of seatbelt's. Post accident as I attempted to remove myself from front of vehicle, I reached down to find the seatbelt had not held during the accident. I am going to inspect the car on 03/05, then release it to my insurance company. How do I proceed if it is found to be faulty?”
NHTSA complaint #10060293, filed 2004-03, 79,800 miles“When attempting to release buckle for driver's restraint buckle would not release. Consumer had to cut belt in order to exit vehicle. Dealership examined vehicle, and determined that buckle assembly locked up.”
NHTSA complaint #890978, filed 2001-06
Buying note. Have a shop inspect the brakes, the transmission cooler lines, and the engine cradle for rust before purchase, and confirm whether recall 96V015000 was completed. Service records showing recent brake hydraulic work are worth asking about, since owners often report repeat repairs.
Summary written with AI from a sample of 60 NHTSA complaints for this model year (picked at random, with complaints that state a mileage and recent ones taken first), then checked automatically against the source records. Where a problem shows a complaint count, every complaint for this model year was matched with fixed keyword rules (written with AI and tested against the sample), and the mileage, age and repair figures are calculated from those complaints; owners' figures are as stated, not verified. Other counts refer to the sample. The excerpts come from NHTSA's public complaint records and are unverified; capitalisation is normalised, NHTSA staff notes are removed, and shortened text ends with “…”. Something wrong? Request a correction.
NHTSA recorded 138 consumer complaints for the 1993 Pontiac Bonneville. 10 of the complaints include a mileage, and 20% of those were filed for vehicles with under 50,000 miles; the median is 126,000 miles. Of all complaints, 12 involved a crash, 11 a fire, 9 an injury, according to the filers. NHTSA lists 1 recall campaign and 1 technical service bulletin for this model year.
Not compared (before 2008). Model years 2008–2023 of the same vehicle that have at least 25 complaints are compared, and a model needs at least 3 of them.
Which parts are reported most
Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.
- Brakes45 33%
- Engine cooling20 14%
- Electrical system18 13%
- Body and structure10 7.2%
- Seat belts8 5.8%
- Vehicle speed control8 5.8%
- Air bags7 5.1%
- Steering6 4.3%
- Fuel system5 3.6%
Also reported: Visibility (wipers, defrost, mirrors) (5), Exterior lighting (4), Tires (3), Latches, locks and linkages (2), Other or unknown (2), Wheels (2), Equipment (1), Interior lighting (1), Seats (1).
Example complaints
Brakes: “The service technition told me that this is a common problem with GM's ABS system. He said I should check into whether there might be a silent recall on the aforementioned ABS system that would be fixed only if a consumer had a problem. I did not see one listed in your data base, but thought you might have access to more information. The tech said it was a flaw in the ABS system, not because of any lack of maintainence of neglect. If you can give me any recall info it would be greatly appreciated as the repair is very costly for a problem not associated with normal wear and usage. …”
NHTSA complaint #702778, filed 1999-01Engine cooling: “Had the hood open and tried to start car. Car made loud boom and blew off plastic intake manifold and ball of flame shot up. My children were nearby and plastic parts went shooting all around nearby area.”
NHTSA complaint #10054251, filed 2004-01, 218,000 milesElectrical system: “Went to the store and when I came out my car would not start, the security light was flashing. I read the owners manual and it said to clean the key and checks the fuses. I did both of these and still no start. I called a GM dealer and told him what had happened, he said that the car is not recogoning the key and that is why it wont start. The key has a chip on it, now this is in no way something that was caused by neglect, it is from a defect in the key, yet GM will not pay to get this fix and get the car back on the road.”
NHTSA complaint #10120922, filed 2005-05Transmission and drivetrain: “The contact owns a 1993 Pontiac Bonneville. The contact stated that his vehicle is leaking transmission fluid. The manufacturer made a report; however, they informed the contact that they were not completely sure if his VIN was included in NHTSA campaign id number 96v015000 (power train:automatic transmission:cooling unit and lines). They stated that they will investigate and provide him with an answer. The current mileage was 56,000 and failure mileage was 55,000. Updated 4/21/08”
NHTSA complaint #10223305, filed 2008-04, 55,000 milesMileage when problems were reported
20% of the 10 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 55,000 and 162,000 miles.
Complaints by year filed
Trend: stable. Complaints filed in the last 3 full calendar years are within 25% of the 3 years before.
Crash test ratings
NHTSA's 5-Star Safety Ratings for the 1993 Pontiac Bonneville. Frontal results are shown driver / passenger; rollover shows the star rating and NHTSA's estimated risk of rolling over in a single-vehicle crash.
| Version | Overall | Frontal | Side | Side pole | Rollover |
|---|---|---|---|---|---|
| Bonneville 4-DR · sedan | not rated | 4 / 4 | — | — | — |
| Bonneville SSE 4-DR · sedan | not rated | 5 / 3 | — | — | — |
Ratings before the 2011 model year come from an older, less demanding test and are not comparable with ratings for 2011 and later.
Source: NHTSA New Car Assessment Program (5-Star Safety Ratings), nhtsa.gov/ratings.
Fuel economy and running cost
EPA ratings for each 1993 Pontiac Bonneville version. Annual fuel cost is the EPA's estimate at its current fuel prices for 15,000 miles a year (55% city driving).
| Version | Engine | Transmission | City | Hwy | Comb. | Fuel / yr |
|---|---|---|---|---|---|---|
| Bonneville FWD | 3.8L 6-cyl | 4-speed automatic | 17 | 26 | 20 | $3,350 |
| Bonneville FWD | 3.8L 6-cyl | 4-speed automatic | 15 | 23 | 18 | $4,550 |
Source: U.S. EPA and Department of Energy, fueleconomy.gov. Ratings are for comparing vehicles; real-world mileage varies with driving and conditions.
Recalls and investigations
- 96V015000Jan 23, 1996Power train › Automatic transmission › Cooling unit and linesCovers: Pontiac Bonneville 1992–1993, Oldsmobile Silhouette 1992–1995, Chevrolet Lumina APV 1992–1995 +5 more
Vehicle description: passenger vehicles manufactured from august 1991 through july 1995. The transmission oil cooler line can separate when the vehicle is operated in low temperatures in combination with high transmission loads.
Recall details for the 1993 Pontiac Bonneville → · Check a VIN at nhtsa.gov/recalls
Technical service bulletins
TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 1 on record; the latest 1 are shown.
- 10246631Sep 1, 2013Engine cooling. Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules
Other model years of the Pontiac Bonneville
| Year | Complaints | Median mi | Recalls | Crash ★ | MPG | Score (50 = typical) | Trend |
|---|---|---|---|---|---|---|---|
| 2005 | 27 | 119,000 | 0 | — | 21 | Not compared (before 2008) | Falling |
| 2004 | 28 | 42,000 | 0 | — | 20 | Not compared (before 2008) | Stable |
| 2003 | 54 | 76,514 | 2 | — | 21 | Not compared (before 2008) | Falling |
| 2002 | 89 | 50,176 | 2 | — | 21 | Not compared (before 2008) | Stable |
| 2001 | 129 | 67,500 | 0 | — | 20 | Not compared (before 2008) | Falling |
| 2000 | 214 | 61,116 | 2 | — | 20 | Not compared (before 2008) | Stable |
| 1999 | 143 | 70,000 | 3 | — | 20 | Not compared (before 2008) | Stable |
| 1998 | 277 | 71,725 | 1 | — | 20 | Not compared (before 2008) | Stable |
| 1997 | 147 | 98,000 | 1 | — | 20 | Not compared (before 2008) | Stable |
| 1996 | 150 | 115,000 | 2 | — | 21 | Not compared (before 2008) | Stable |
| 1995 | 244 | 120,000 | 1 | — | 20 | Not compared (before 2008) | Falling |
| 1994 | 88 | 127,000 | 0 | — | 20 | Not compared (before 2008) | Stable |
| 1993 | 138 | 126,000 | 1 | — | 20 | Not compared (before 2008) | Stable |
| 1992 | 113 | 170,000 | 3 | — | 19 | Not compared (before 2008) | Stable |
| 1991 | 22 | 114,000 | 1 | — | 20 | — | Stable |
| 1990 | 39 | 140,000 | 0 | — | 19 | Not compared (before 2008) | Stable |
| 1989 | 28 | 53,272 | 1 | — | 19 | Not compared (before 2008) | Stable |
| 1988 | 17 | — | 0 | — | 20 | — | Stable |
| 1987 | 19 | — | 3 | — | 19 | — | Stable |
All Pontiac Bonneville model years · Best and worst years by complaints
Frequently asked questions
What are the most common problems with the 1993 Pontiac Bonneville?
Owners of this model year most often report brake problems, especially fluid leaks at the rear wheels that need cylinder repairs, along with ABS warning lights and intermittent braking concerns. The issues reported most often: Leaking rear wheel cylinders / brake fluid loss; ABS warning light or unintended ABS activation; Transmission oil cooler line leaks or separates.
How many NHTSA complaints does the 1993 Pontiac Bonneville have?
NHTSA recorded 138 consumer complaints for the 1993 Pontiac Bonneville as of Nov 1, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
What part of the 1993 Pontiac Bonneville is reported most often?
Brakes is named most often, in 45 complaints (33% of the total), followed by engine cooling with 20.
Has the 1993 Pontiac Bonneville been recalled?
NHTSA lists 1 recall campaign for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.
What gas mileage does the 1993 Pontiac Bonneville get?
The EPA rates the 1993 Pontiac Bonneville (Bonneville, 3.8L 6-cyl) at 20 mpg combined, 17 city and 26 highway, with an estimated annual fuel cost of $3,350 at 15,000 miles a year. Other engine and drive versions are rated differently.
At what mileage are problems with the 1993 Pontiac Bonneville reported?
Among the 10 complaints that include a mileage, the median is 126,000 miles and the middle half falls between 55,000 and 162,000 miles; 20% were filed for vehicles with under 50,000 miles.
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate. Crash ratings are from NHTSA’s New Car Assessment Program. Fuel economy is from the EPA and DOE (fueleconomy.gov).
Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.