So far I have put 260 miles on my 4.8i and no problems. No question in the first few miles I tought OH NO some hesitation with downshifting etc like mention here but it seems after it learns your driving style if smoothed out.
2015 335i Sportline | Driver assist| HK | NAV | Premium | Heated Front seats |8-Speed Auto.
2014 X3 35i Dynamic Handling Package| Cold Weather Package | NAV | Premium hi-fi system | Driver Assistance Package.
2013 335i Sportline | M-adaptive | HK | NAV | PDC | Heated Front seats |6-speed MT. GONE Great car, zero issues
2011 X5 35d Great SUV gone