 The variety of styles available provided a wide selection to the public; this fact combined with the models' low initial cost and moderate operating costs caused the C4 to be fairly popular during its eight-year production run.The C4 chassis is a lengthened version (by 14 cm) of that of the Amilcar CC model.Coachwork for this vehicle was fabricated by subcontractors and delivered to the Amilcar for final assembly.