I own the sport and the difference is the gearbox, the sport is fully loaded, the only thing it doesn’t have is the rear blinds, the gearbox has better gearing than the standard 220d which means you can use sixth gear without breaking the speed limit, the trade-off is the car is less economical both on a run and around town. On a run I get around 35 mpg and around town I get in the mid 20’s, admittedly I do have a heavy right foot but even driving like miss daisy doesn’t really improve it that much. The diesel is a good car but I would strongly recommend getting the Lexus Warranty as part of your purchase, as both I and Normski have come to appreciate, it will save you thousand’s in the long run as that’s what it cost to repair the diesel when it goes wrong.