The current Pontiac Bonneville is 5,110 mm long, 1,869 mm wide and 1,409 mm tall, on a 2,814 mm wheelbase.
Only one generation of this model is in our catalogue, so there is no size history to compare yet.
Exterior figures are manufacturer specifications for the Bonneville, averaged per generation across its variants and shown for the most common body style. Generations with the same size are merged. Boot capacity is the seats-up figure where the manufacturer quotes one.