Powertrain Issues (Rear Differential)

Reports of noise and failure in the rear differential. Issues are noted around 38,000-42,000 miles and again at higher mileages. Estimated repair cost: $1,000 - $2,500.

Electrical System Faults (CUE Screen)

Malfunctions with the CUE infotainment system, including screen cracking, unresponsiveness, and wiring issues. Some electrical complaints point to complete wiring burnout. Estimated repair cost: $500 - $1,200.

Brake System Concerns

Recalls and complaints related to the brake pedal linkage and potential brake system failures. Some reports indicate inoperable brakes or pedal depression to the floor. Estimated repair cost: $300 - $1,000.

A critical complaint details a catastrophic suspension failure involving a broken lower control arm, fractured axle, and broken anti-roll bar linkage, leading to loss of control. Estimated repair cost: $500 - $1,500.

CARFOCALvehicle research

2015 Cadillac ATS Maintenance guide

Name: Maintenance dataset for 2015 Cadillac ATS
Creator: Carfocal

v1.0Updated May 30, 2026Ethan Miller4 Sources Analyzed1 Critical Recalls

MAINTENANCE SUMMARY

The 2015 Cadillac ATS presents a below-average reliability profile, with significant concerns in its powertrain, steering, and electrical systems. Owners should prioritize inspections of the steering motor and bolts, brake pedal linkage, and rear differential.

View Critical Issue: Steering System Failure

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Reliability Score

Est. Annual Maintenance Cost

$400 - $800

TSBs & Recalls

1,111 TSBs | 3 Recalls

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Key Takeaways

Below-average reliability is a primary concern for the 2015 Cadillac ATS.
Steering system issues, including power assist loss and mounting bolt failures, require diligent inspection.

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Critical service intervals

Common failure analysis

Symptoms and prevention guidance