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#BS-2018-CADCT6-63DD

2018 Cadillac CT6Problems, Recalls & Reliability

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

Data updated ·checked October 21, 2026 · NHTSA complaints through October 19, 2026

Complaints
16
Crashes
0
Fires
0
Recalls
0
TSBs
693
✅

Preliminary Verdict

Green Light

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

See full verdict with buy/skip conditions

Top reported problems

1

engine runs rough in 4 cylinder mode

2 complaints • Severity 6/10

$X,XXX
2

hesitation feels like it is slipping at any speed

1 complaints • Severity 6/10

$X,XXX

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Mechanic Inspection Checklist

!Check the EngineHIGH

3 owners reported engine issues — failures commonly reported around 36K miles.

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

30,000-Mile Cost Projection

Best Case

$X,XXX

Most Likely

$X,XXX

Worst Case

$X,XXX

Top cost driver: Engine (3 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

Engine3 (19%)
Drivetrain3 (19%)
Fuel System2 (13%)
Steering2 (13%)
Lights1 (6%)
Forward Collision Avoidance: Adaptive Cruise Control1 (6%)
Lane Departure: Assist1 (6%)
Brakes1 (6%)

2018 Cadillac CT6: Known Issues & Problem Areas

Engine Issues

Engine complaints account for 19% of all reports filed for the 2018 Cadillac CT6, with 3 owners filing complaints with NHTSA. The median mileage at time of complaint is 35,500 miles, suggesting issues tend to surface around the 36K-mile mark.

Drivetrain Issues

Drivetrain complaints account for 19% of all reports filed for the 2018 Cadillac CT6, with 3 owners filing complaints with NHTSA. Owners should pay attention to drivetrain-related symptoms during test drives and pre-purchase inspections.

Fuel System Issues

Fuel System complaints account for 13% of all reports filed for the 2018 Cadillac CT6, with 2 owners filing complaints with NHTSA. Owners should pay attention to fuel system-related symptoms during test drives and pre-purchase inspections.

Steering Issues

Steering complaints account for 13% of all reports filed for the 2018 Cadillac CT6, with 2 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

6
21
3
23
3
24
1
25
3
26

Complaints filed with NHTSA by year for the 2018 Cadillac CT6. Recent trend: increasing.

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

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2018 Cadillac CT6 NHTSA Safety Ratings

Overall

Not rated

Frontal crash

Not rated

Side crash

Not rated

Rollover

Not rated

From NHTSA's New Car Assessment Program (5-Star Safety Ratings). Where NHTSA tested more than one version of this vehicle, the lowest rating is shown.

The worst model year for the Cadillac CT6 is the 2017 — worth knowing if you're cross-shopping years. The biggest problem area is transmission.

2018 Cadillac CT6 vs. Class Average (Large Cars)

This vehicle

16

Class avg

138

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. 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.

Last updated (checked October 21, 2026). NHTSA complaints received through October 19, 2026; safety ratings from NHTSA's 5-Star program.

Other Cadillac CT6 Model Years

20202019201820172016
View all Cadillac CT6 years →

2018 Cadillac CT6: Frequently Asked Questions

What is the most common problem with the 2018 Cadillac CT6?
The most commonly reported issue with the 2018 Cadillac CT6 is related to the engine, with 3 complaints filed with NHTSA.
Is the 2018 Cadillac CT6 reliable?
The 2018 Cadillac CT6 has 16 complaints, 0 crash reports, and 0 fire reports filed with NHTSA. This is below the class average — a positive sign for reliability.
How much does it cost to fix 2018 Cadillac CT6 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 2018 Cadillac CT6 have any recalls?
No recalls have been issued for the 2018 Cadillac CT6 according to NHTSA records.
What mileage do Cadillac CT6 problems start?
Based on 6 complaints with mileage data, the median mileage at time of complaint is 35,500 miles. The highest concentration of reported issues occurs in the 0–30K mile range. The full report breaks down exactly which components fail at each mileage bracket.
When was the 2018 Cadillac CT6 data last updated?
BumperScan last checked this vehicle against NHTSA on October 21, 2026, covering owner complaints received through October 19, 2026 plus the latest recalls, investigations and technical service bulletins. Its numbers last changed on October 4, 2026.
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 16 owner reports. Know before you buy.

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