The bonnet catch mechanism on the Alfa Romeo 147 GTA represents one of the model’s most concerning safety issues. While seemingly minor, this component’s failure can lead to catastrophic consequences during driving. The problem stems from Alfa Romeo’s initial design decision to apply grease to the catch mechanism during production. Over time, this grease attracts and traps dirt, dust, and road debris, creating a paste-like substance that compromises the primary catch’s functionality.
When the primary catch fails, only the secondary safety catch prevents the bonnet from opening completely. While this backup system provides temporary protection, it wasn’t designed for continuous use. Multiple cases have been documented where the secondary catch also failed during driving, causing the bonnet to violently flip upward. The force of the air at speed can then cause the bonnet to lift up into the windscreen and roof, potentially causing a serious accident.
The manufacturer acknowledged this defect through a recall campaign, implementing a two-stage solution. Initially, technicians would completely strip and degrease the mechanism, removing years of accumulated grime before reassembly. In more severe cases, Alfa Romeo replaced the entire unit. Later production runs received an updated plastic catch mechanism, which showed improved resistance to contamination, though isolated failures still occurred.
For more Alfa Romeo 147 problems and facts, check out our buyer’s guide here.
Nice to know that the manufacturer took immediate steps to rectify the issue.