The current Chevrolet HHR is 4,475 mm long, 1,755 mm wide and 1,588 mm tall, on a 2,631 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 HHR, 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.