The current Toyota iQ is 2,985 mm long, 1,680 mm wide and 1,500 mm tall, on a 2,000 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 iQ, 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.