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Two additional gears mean threefold progress: quicker shifts, greater smoothness, enhanced efficiency.
The wider spread of ratios allows the engine to run at lower speeds, often in the "tallest" gear, 8th. Yet even with this wider spread, the steps between adjacent gears are reduced; in t ...

The Appendage Factor
M cars have had what I call a high appendage factor — the feeling that the car is an extension of the driver. It's typically experienced in cars whose various systems and characteristics are well- ...

Safety
The xDrive50i has upgraded brakes with aluminum calipers. BMW's Integrated Chassis Management coordinates the Dynamic Performance Control differential with stability and traction control systems t ...