The 4 litre model was conceived as a belated and unsuccessful response to shore up the company's finances aswell as presenting a direct competitor to the Rolls Royce 20/25. At 2/3rds of the price of an 8 litre this "economy"(!) model used a Ricardo IOE straight-six engine producing 120 BHP. Predictably the heavy coachwork fitted to the 8 litre chassis upon which the model was largely based on, resulted in a performance deficit when compared to the 8 litre engine models and sales did not take off.

The final Vintage Bentley model made before the Rolls Royce takeover.