The idea of a diesel coupe sounds great in theory and practice. But sooner or later, you may realise the sound of the car will not fit in with the look of the car. I would love to own one some day, but the feel that you get when you floor the accelerator or throttle response that you get, needs to be on par with a petrol car, which for me is where the short comings are with a diesel coupe.
Sure they are fast & very fuel efficient but in terms of outright driver feel and response the petrol motors are more suitable to the 2door application.
I will say with the recent diesel motors they are bloody good, but more suited to sedans and suv type vehicles.