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#BS-2004-PONBON-6AC4

2004 Pontiac Bonneville

Based on reports from 38 owners and 0 recalls for this exact model.

Complaints
38
Crashes
0
Fires
2
Recalls
0
TSBs
444
🟢

Preliminary Verdict

Proceed with Caution

Based on 38 complaints, 0 crashes, 2 fires, and 0 recalls.

See full verdict with buy/skip conditions

Top reported problems

1

gauge cluster stopped working

3 complaints • Severity 9.3/10

$X,XXX
2

leaking intake manifold gaskets

2 complaints • Severity 6/10

$X,XXX
3

water leaking into trunk

1 complaints • Severity 4/10

$X,XXX

Preview: What's in your full report

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Mechanic Inspection Checklist

!Check the SteeringHIGH

7 owners reported steering issues — failures commonly reported around 43K miles.

!Inspect the ElectricalMED
Look for symptoms of wear and premature failure
+ 6 more items in full checklistUnlock

Failure Timeline by Mileage

8
0–30K
16
30–60K
4
60–90K
2
90–120K
3
120–150K
1
150K+

Peak failure range: 30–60K miles (16 reports) • Median: 43K miles

Full report: which components fail at each mileageUnlock

30,000-Mile Cost Projection

Best Case

$X,XXX

Most Likely

$X,XXX

Worst Case

$X,XXX

Top cost driver: Steering (7 reports).

Includes fuel costs, common repairs, and recall riskUnlock

Also in your report

Owner Intelligence

AI-synthesized themes from real complaints

Buyer Lot Checklist

Questions, test drive checks, walk-away triggers

Negotiation Talking Points

Data-backed dollar deductions

Buy / Skip Verdict

Final recommendation with conditions

10 sections total in the full reportUnlock all

Where the complaints fall

Steering7 (18%)
Electrical6 (16%)
Electrical System: Instrument Cluster/panel3 (8%)
Electrical System:12v/24v/48v Battery2 (5%)
Airbags2 (5%)
Brakes2 (5%)
Other2 (5%)
Suspension1 (3%)

2004 Pontiac Bonneville: Known Issues & Problem Areas

Steering Issues

Steering complaints account for 18% of all reports filed for the 2004 Pontiac Bonneville, with 7 owners filing complaints with NHTSA. The median mileage at time of complaint is 43,000 miles, suggesting issues tend to surface around the 43K-mile mark.

Electrical Issues

Electrical complaints account for 16% of all reports filed for the 2004 Pontiac Bonneville, with 6 owners filing complaints with NHTSA. Owners should pay attention to electrical-related symptoms during test drives and pre-purchase inspections.

Electrical System: Instrument Cluster/panel Issues

Electrical System: Instrument Cluster/panel complaints account for 8% of all reports filed for the 2004 Pontiac Bonneville, with 3 owners filing complaints with NHTSA. Owners should pay attention to electrical system: instrument cluster/panel-related symptoms during test drives and pre-purchase inspections.

Electrical System:12v/24v/48v Battery Issues

Electrical System:12v/24v/48v Battery complaints account for 5% of all reports filed for the 2004 Pontiac Bonneville, with 2 owners filing complaints with NHTSA. Owners should pay attention to electrical system:12v/24v/48v battery-related symptoms during test drives and pre-purchase inspections.

Data sourced from NHTSA owner complaints and community reports. The full report analyzes severity, repair costs, and failure patterns for each category.

Complaint trend by year

1
04
2
05
9
06
3
07
6
08
1
09
5
10
2
11
2
12
1
13
5
14
1
15

Complaints filed with NHTSA by year for the 2004 Pontiac Bonneville. Recent trend: decreasing.

Don't negotiate blind — know what this car costs to own

Repair costs • Negotiation scripts • Mechanic checklist • Buy/skip verdict

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The worst model year for the Pontiac Bonneville is the 2000 — worth knowing if you're cross-shopping years. The biggest problem area is windows / windshield.

2004 Pontiac Bonneville vs. Class Average (Large Cars)

This vehicle

38

Class avg

162

Below the class average — fewer complaints than typical large cars vehicles. A good sign.

Complaint counts correlate with sales volume — popular vehicles naturally generate more reports. The full report normalizes for this.

About this data

NHTSA Complaints

Federal database of owner-filed safety complaints. 38 records for this vehicle.

NHTSA Recalls

Manufacturer-issued safety recalls. 0 recalls found for this vehicle.

Repair Cost Data

Real-world repair costs from owner reports and independent databases.

Other Pontiac Bonneville Model Years

20052004200320022001200019991998199719961995199419931992199119901989198819871986198519841983198219811980197919781977197619751974197319721971197019691968196719661965
View all Pontiac Bonneville years →

2004 Pontiac Bonneville: Frequently Asked Questions

What is the most common problem with the 2004 Pontiac Bonneville?
The most commonly reported issue with the 2004 Pontiac Bonneville is related to the steering, with 7 complaints filed with NHTSA.
Is the 2004 Pontiac Bonneville reliable?
The 2004 Pontiac Bonneville has 38 complaints, 0 crash reports, and 2 fire reports filed with NHTSA. This is below the class average — a positive sign for reliability.
How much does it cost to fix 2004 Pontiac Bonneville problems?
Repair costs vary by issue. The full BumperScan report includes detailed repair cost estimates (low/median/high) for every major issue, plus a 30,000-mile total cost of ownership projection.
Does the 2004 Pontiac Bonneville have any recalls?
No recalls have been issued for the 2004 Pontiac Bonneville according to NHTSA records.
What mileage do Pontiac Bonneville problems start?
Based on 34 complaints with mileage data, the median mileage at time of complaint is 43,000 miles. The highest concentration of reported issues occurs in the 30–60K mile range. The full report breaks down exactly which components fail at each mileage bracket.
What’s in the full report?
10 sections of AI analysis: severity-ranked issues, component scores (0-100), 30K-mile cost projection, failure timeline by mileage, recall details with seller scripts, owner sentiment analysis, mechanic checklist, buyer lot checklist, negotiation ammo with dollar figures, and a buy/skip verdict.
How is this different from free NHTSA data?
NHTSA gives you raw complaint text. BumperScan cross-references 2.1M+ complaints with community repair cost data, EPA fuel data, and recall records — then uses AI to synthesize it into actionable advice with dollar figures.
How is this different from Carfax?
Carfax is VIN-specific history ($45/report). BumperScan is model-level reliability intelligence — what problems this car is known for, what they cost, and whether you should buy it. Complementary, not competing.
What if the report isn’t useful?
100% money-back guarantee. If the report doesn’t help you make a more informed decision, we’ll refund you — no questions asked.
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10 sections of AI analysis based on 38 owner reports. Know before you buy.

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