The Citroen BX Dyana was a one-off special conceived by France Design Henri Heuliez, built on the platform of the Citroen BX Break produced by Heuliez. It was shown to select specialists ahead of the 1986 Paris Salon. The project reworked the five-door BX saloon into a three-door estate with a steeply raked rear window, a configuration its creators described as a coupe-break.
The Dyana was conceived with the same market in mind as cars like the Honda Accord Aerodeck and Volvo 480, aiming to capture demand for a sporting estate body style. However, because the standard BX roofline height was retained, the car did not achieve the sporty appearance its concept implied. Lengthened doors and unusually long, two-step second side windows were used to soften this impression, along with a proposed upmarket interior, but these features did not fully disguise the car's proportions. Behind the darkened rear side windows sat the saloon's original rear roof support structure, carried over from the donor car.
Mechanically the Dyana used the Citroen BX's running gear, including a 1905 cc four-cylinder engine, mounted on a wheelbase of 265.5 cm. The body was configured as a three-door sporting estate with seating for five. Despite hopes within Heuliez for series production, the Dyana never progressed beyond this single show car and was not put into production.
