Lots of what you described sounds like subframe bushings. Especially freeway thump from the rear.

Example: a distinct thump if on power up hill and hit a bridge expansion bump. Every time I'll get a thump that feels like a gear slipping a tooth. E.g. Instantly loose power and get it back.

The twist of the subframe does exactly that: for a split second when the car gets light on the spring power goes to twisting the subframe not pushing the car forward.

I also get a creak every time I start accelerating from zero as the subframe twists.


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