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Expect to spend a couple thousand dollars in repairs a year in addition to regular maintenance. My parents did not have catastrophic failures with their E38 or E66 when they had them. However, expensive plastic/rubber parts fail regularly on older 7's. Valve cover gasket, power steering hose, radiator upper/lower hose, transmission pan, alternator, etc. are some of the non-regular maintenance items that failed on our cars (we drove them from new to about 120K miles each).
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