S-Class (W140) 1991-1999: 300 SD, S 350TD, 300 SE 2.8, S280, 300 SE 3.2, 300 SEL 3.2, S320, S320L, 400 SE, S420, 400 SEL, S420L, 500 SE, S500, 500 SEL, S500L, 600 SE, S600, 600 SEL, S600L, 500 SEC, 600 SEC

'95 S600 V12 Motor Reliability

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Old Jun 27, 2011 | 02:57 PM
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'95 S600, '77 300D
'95 S600 V12 Motor Reliability

probably should have asked this question before i purchased, but what is the historical record for these engines as far as reliability/durability?

what are the typical problems that can crop up? besides oil/filter changes what else should be replaced/adjusted on a scheduled bases such as valve adjustments, fuel injector cleaning, etc??

thanks,
rick
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Old Jun 28, 2011 | 09:18 AM
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s320
Mercedes would build the engine like all of them,reliable long lasting.However I don't know if the wiring problem is with the 600s.
I saw on S600 for sale last year with 229000 miles.
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Old Jul 3, 2011 | 03:19 PM
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Russell Ormerod's Avatar
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not a merc
wiring looms do cause problems on the LH injection sysytems, mechanically they pretty good, At that mileage I would check the valve timing and possibly renew Chain and tensioner. hopefully its had regular oils changes
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Old Jul 12, 2011 | 01:22 AM
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Mechanically the v12 is fine but electronics attached to it are the problem. The throttle actuators and harness are design defected and use biodegradable wiring which will fail and be as expensive as a normal cars engine
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