A 4 engine line up for a model range that sells around 600 units per annum is surely a non starter. The current offerings of an entry model at a keen (for a hand built car) price point, the plus 4 which numbers wise must be the mainstay of the trads and if you spec up is a £40k + car and £45 - £55k V6 doesn't leave much room for a 2.5. The hole in the model range is probably in the £75k bracket but that is purely academic for many, my self included.