2017 Cadillac CT6

The 2017 model sits at the top of the CT6’s complaint arc, with 26 federal complaints—more than double the 11 filed in 2016 and well above the 10 logged in 2018—while recalls dipped to 2 from 3 the prior year. Across this generation, complaints generally moderate after 2017, holding between 10 and 15 through 2020, whereas recalls stay low and intermittent except for a spike to 4 in 2019; TSBs decline steadily from 1,369 in 2016 to 750 in 2020, and investigations remain at zero throughout. The 2017 spike clusters in powertrain-related complaint categories, which comprise the majority of that year’s docket, though the federal data does not specify a single root cause. Importantly, the 2017 record registers zero crash and zero fire complaints, indicating the elevated grievances did not translate into safety-critical failures. Given that the elevated complaints are not matched by high recall or investigation activity, the 2017 CT6 is a conditionally sound used-car purchase, though buyers should prioritize a clean powertrain inspection and recognize that 2018 offers a materially lower complaint footprint with identical recall exposure.