There are 1 owner-reported powertrain & transmission complaints for the 2024 Kia Carnivalin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
"Continuous engine oil leak for 12 months. After 4 failed repair attempts, the dealer used liquid sealer instead of a gasket. This is a deceptive repair that creates a severe fire hazard. The leak is still active today, March 2026."
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on May 4, 2026