I had mine for 77,000 miles. I'm a speed junkie and only felt under power in the 70-100 range. It's no speed demon 0-60 but the shift points and ability to sport mode/manual shift puts you in control.

For normal driving the m54/5auto is a fine combination.

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)