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I'm touching some Zebrano wood while I type this...
I change the engine air filter with every other oil change, and carefuly clean out the airbox. I use only the OE filter. If I take a highway trip and get lots of dust, bugs, etc on the front, I figure lots made it underhood, so I change the filter asap.
No AMM failure yet.
As to the Japanese cars, I know more than a few Honda and Toyota owners with AMM problems and the part is much more expensive than the MB part. Current emission regs call for a very sensitive AMM, and they seem to be pretty delicate, regardless of make.
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