2016 Buick Cascada structure problems
10 owner complaints filed with NHTSA name the structure on the 2016 Buick Cascada — 48% of all complaints for this model year.
What owners report
“Buick Cascada back window on the convertible tops coming apart, causing flooding inside the car, also there's a danger the window will come out driving down the road. Buick refuses to do anything.”
filed Apr 14, 2026
“The back window on the convertible top has separated from the fabric. Buick dealership said it was not a covered item under the extended warranty. We tried to glue it back down but it keeps separating all around. Dangerous situation because it could separate completely during travel and cause an…”
filed Feb 18, 2026
“The rear window of the convertible top starts to pull away from the top itself. Could separate and displace entirely causing damage or injury behind.”
filed Feb 18, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Other reported problem areas on the 2016 Buick Cascada
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.