I measured 20mA last month on my new 300d. New to me I mean. It seemed like a lot for an older car but I realized there was an aftermarket stereo in there with a standby mode.

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79 300TD “Old Smokey” AKA “The Mistake” (SOLD)
82 240D stick shift 335k miles (SOLD)
82 300SD 300k miles
85 300D Turbodiesel 190k miles
97 C280 150k miles