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What 4 owners told NHTSA about the 2026 Cadillac CT5

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (4)Driver assistance (3)Speed control (2)Electrical system (1)Engine (1)Transmission & drivetrain (1)

1 of 4 complaints match · Transmission & drivetrain · clear filters

Feb 17, 2026Transmission & drivetrainSpeed controlEngine

Catastrophic engine failure within 700 miles Requires full engine replacement Problems began around 150 miles on odometer Message: Reduced accelerated speed Check engine light Service transmission system Service variable valve timing system

NHTSA ODI 11718643

Working with the data? Download all 4 complaints as CSV · fetched from NHTSA July 9, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2026 Cadillac CT5 verdict →