The 3-series facelift mainly around two aspects, I believe we have seen from the title of the article, that is smart and efficient. Smart reflected in a new ConnectedDrive system, which is BMW's new research and development, has been the first released in the US in March, the new model will be equipped with the old models can not be used. In simple terms this App is the memorandum we usually used to alert and navigation integrated with the phone side settings can be synchronized directly to the car, so that inside the vehicle seamlessly, in addition to looking at the vehicle so that the state regular content. Relatively easy to use, operate without difficulty, but there is little need Tucao, logic from the current map zoom into a clockwise rotation counterclockwise rotation zoom, and Audi Engine Parts, as before, with a special twist, Audi now change overnight, BMW how and changed back? Then we look at the intelligent and efficient, mid-term facelift model of the power system upgrade is relatively common phenomenon, the 3 Series GT is no exception. The new 3 Series GT petrol version of the model will be equipped with low-power B48 2.0T engine and B58 3.0T engine. The test drive is 340i models with 3.0T engine aftermarket auto parts, transmission or eight-speed manual gearbox. B58 as the N55's successor, in terms of design there are some similarities, but more progress is that some problems before optimizing the N55. First B58 engine uses a closed-end cylinder waterways, in addition to leaving the coolant duct openings are outside the upper cylinder with the cylinder body shell closed connection, play a supportive role. For the N55 engine engine parts uk, open waterways, if the cylinder pressure is too large, the time beyond the design limits, it may cause a shift cylinder or the cylinder wall rupture, which is why the N55 BMW has not been too much power to lift up the fundamental the reason.