mb mechanic says 6 hrs for labour replacing bushings
6 hrs=600 CAnadian $+100 for bushings+bjs 100$=800C$(with old rusty metallic arms)
I suppose cutting the control arms off and replacing them(with the included bushings and balljoints)would be much less.
?1 hr=100+700 for the control arm sets=800C$(with brand new arms)
Is the math correct?
unless like Steve says,the W124 control arm bushings does not ever need replacing/then the math is purely academic

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Tom 2010 C250 4-matic Sport (Canada)