A fine layer of dust is the most dirt the average Aston Martin DBX will see. Aston Martin puts it down to software. The DBX sends much of its AMG grunt to the rear wheels (via a carbon fibre drive shaft), bolstering its athletic personality. The DBX is essentially a rear-drive car most of the time, only sending drive to the front wheels when slippage is detected. Aston Martin is proud of the bespoke architecture for the DBX, whereas rivals swap and share.