Really, watch an episode of Wheeler Dealer, 8 yr old MBs that have undersides that look like rust flakes holding hand.

Rolling thru NM a few months ago I had to stop and check out an auto salvage yard with DOZENS of +50 yr old restorable vehicles out front. Looked underneath a few early '60s VWs and was amazed at the condition.
The 2 I owned in the 70s were rotted thru the floors when I got them (NJ)!

While searching the used X market in FL I came across a few with significant underside rust, Carfax pull showed they were transplants brought to FL from the NE. Walked.

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'03 X5 4.4 Sport, last of the M62s (8-03 build date)
I believe in deadication to craftmanship in a world of mediocrity!