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#BS-1999-CADSTS-4C26

1999 Cadillac Sts

Based on reports from 16 owners and 0 recalls for this exact model.

Complaints
16
Crashes
0
Fires
1
Recalls
0
TSBs
11
🟢

Preliminary Verdict

Proceed with Caution

Based on 16 complaints, 0 crashes, 1 fires, and 0 recalls.

See full verdict with buy/skip conditions

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Mechanic Inspection Checklist

!Check the ElectricalHIGH

6 owners reported electrical issues — failures commonly reported around 99K miles.

!Inspect the EngineMED
Look for symptoms of wear and premature failure
+ 3 more items in full checklistUnlock

Failure Timeline by Mileage

0–30K
1
30–60K
2
60–90K
5
90–120K
1
120–150K
2
150K+

Peak failure range: 90–120K miles (5 reports) • Median: 99K 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: Electrical (6 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

Electrical6 (38%)
Engine5 (31%)
Engine And Engine Cooling:engine3 (19%)
Steering1 (6%)
Suspension:front1 (6%)

1999 Cadillac Sts: Known Issues & Problem Areas

Electrical Issues

Electrical complaints account for 38% of all reports filed for the 1999 Cadillac Sts, with 6 owners filing complaints with NHTSA. The median mileage at time of complaint is 98,587 miles, suggesting issues tend to surface around the 99K-mile mark.

Engine Issues

Engine complaints account for 31% of all reports filed for the 1999 Cadillac Sts, with 5 owners filing complaints with NHTSA. Owners should pay attention to engine-related symptoms during test drives and pre-purchase inspections.

Engine And Engine Cooling:engine Issues

Engine And Engine Cooling:engine complaints account for 19% of all reports filed for the 1999 Cadillac Sts, with 3 owners filing complaints with NHTSA. Owners should pay attention to engine and engine cooling:engine-related symptoms during test drives and pre-purchase inspections.

Steering Issues

Steering complaints account for 6% of all reports filed for the 1999 Cadillac Sts, with 1 owners filing complaints with NHTSA. Owners should pay attention to steering-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

2
05
6
06
2
09
2
10
3
12
1
14

Complaints filed with NHTSA by year for the 1999 Cadillac Sts. Recent trend: decreasing.

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

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The worst model year for the Cadillac Sts is the 2005 — worth knowing if you're cross-shopping years. The biggest problem area is electrical.

About this data

NHTSA Complaints

Federal database of owner-filed safety complaints. 16 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 Cadillac Sts Model Years

20112010200920082007200620052004200320022001200019991998
View all Cadillac Sts years →

1999 Cadillac Sts: Frequently Asked Questions

What is the most common problem with the 1999 Cadillac Sts?
The most commonly reported issue with the 1999 Cadillac Sts is related to the electrical, with 6 complaints filed with NHTSA.
Is the 1999 Cadillac Sts reliable?
The 1999 Cadillac Sts has 16 complaints, 0 crash reports, and 1 fire reports filed with NHTSA. The full report analyzes whether these numbers indicate real risk or are proportional to the vehicle’s popularity.
How much does it cost to fix 1999 Cadillac Sts 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 1999 Cadillac Sts have any recalls?
No recalls have been issued for the 1999 Cadillac Sts according to NHTSA records.
What mileage do Cadillac Sts problems start?
Based on 11 complaints with mileage data, the median mileage at time of complaint is 98,587 miles. The highest concentration of reported issues occurs in the 90–120K 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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