The bottom line is that BMW is throwing money at leases to move metal. BMW is selling you money at close to free, is setting its lease residuals artificially high and is making it easier than it's ever been to drive a new car. You can crunch the numbers all you like, but there's really no reason for a well structured lease deal to be markedly more (if any more) expensive than the cost you'd incur were to choose to finance or buy the same car outright over the same period. As I said above, deals are either good or bad, and the bad deals are not solely the preserve of the lessee. A poorly prepared buyer will pay more regardless of how they finance their vehicle.
2014 Jaguar F-Type V8 S
Range Rover HSE Lux, Orkney Gray, Sand interior
Porsche 911 Carrera S, Midnight Blue, 6-Speed
BMW 550i, BMW 545i