I want to start a private hire car business. I've considered several cars such as a Mercedes-Benz E250CDI, ML 250CDI or 350 diesel. Lastly I have discovered the BMW 530D GT. Knowing that some luggage will need to be carried, I'd like an opinion on the cars mentioned. I'd buy one-year-old from a dealer.
The BMW GT has a brilliant boot but, if I were doing what you're doing, I'd get a Hyundai Genesis. Perhaps not as prestigious, but the same interior and boot space as the Benz. And there is a five-year free service deal and a five-year warranty, as well as talk of a guaranteed future value scheme.