It's the high mileage stuff that starts the grey area of this definition of repair. I replaced the rear springs on my '80 SD, but that was when the car was 21 years old. They didn't break, they just weren't holding up the backend like I am sure they did when new, they just wore out. I guess anything that breaks prematurely would be a repair, like motor mounts, radiators, etc. Fluids and filters are definetly maintenance items.

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1999 MB SL500 (110,000 mi)
2004 Volvo V70 2.5T (220,000 mi)
2014 Tesla Model S 85 (136,000 mi)
MBCA member