For 1984, Brunner's new D7 chassis was introduced, but it was largely the same story, with not inconsiderable speed rarely rewarded, not helped by Brunner quitting after, predictably, yet another an argument with Schmid. Winkelhock ran 3rd at the Belgian Grand Prix before the electrical system failed, but his best finishes were 8th places in the Canadian Grand Prix and the Dallas Grand Prix. From the Austrian Grand Prix, a second D7 was added for Gerhard Berger. After a gearbox failure on the grid at the Italian Grand Prix, Winkelhock finally lost patience and quit. In the race, Berger placed 6th, but the point was not awarded as the second entry had not been registered at the start of the season. Berger entered the last two races alone, with Winkelhock not replaced.