Sometimes playing catchup is expensive....Just the way it is. But you must realize that if you "spread" the work out, it seems like it "never" ends, but in reality most people pay Joe Smoe to do it all over a course of a week, at a huge expense of course.

Stick with it. No car is an investment, so removing yourself completely away from the "hidden cost" of depreciation is a great thing. You know these older benz's will no longer depreciate, so all your costs are the maintenance.

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k