[42pilot]

Its quite possibly the worst feature of this car. When the system is on, and you come to a stop in traffic, all the lubricating oil drains from the cam lobes causing increased wear, the oil pressure feeding the main bearings drops to zero and allows metal to metal contact (on every start this happens, and slightly adds to engine wear on each start), allows the engine to heat up further (oil and water cool the internal engine parts) and increases the duty cycles to the starter by a factor of X (for most of us, maybe a factor of 10 at least in medium traffic conditions). I think the motors with turbos still have the cooling pump on as normal, otherwise oil would heat up and burn (coke) around the bearing and cut the turbo bearing life in half.