R-Class (W251) Produced 2006-2013: R320CDI, R350, R420CDI, R500

How different is the engine in an R63 vs R500?

Old 02-03-2016, 05:11 PM
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How different is the engine in an R63 vs R500?

I have a 2007 R63 and my check engine light recently came on. The code came back for the thermostat. I did a search but nothing really comes up for the R63. I know I have to replace the t-stat but are the engines different from the r63 and r500?
Old 02-03-2016, 06:02 PM
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08 R350, 07 Acura RL, 1989 Honda Shadow VLX600 (10K miles)
Originally Posted by x2nervisx
I have a 2007 R63 and my check engine light recently came on. The code came back for the thermostat. I did a search but nothing really comes up for the R63. I know I have to replace the t-stat but are the engines different from the r63 and r500?

There is R63 forum on this site. You should post on there too.
Hope someone can help you.
Old 02-03-2016, 07:18 PM
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2008 R320 CDI, 1987 560SL
They are completely different engines, but because they are both MB engines you will find similarities.
Old 02-03-2016, 08:09 PM
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ok so the r63 engine isn't a modified R500 engine? It's a completely different motor?
Old 02-03-2016, 08:22 PM
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2008 R320 CDI, 1987 560SL
That's correct the R63 has the M156 6.2L V8. The R500 could have 1 of 2 different V8's depend ending on the year and region; the M113 (4.2L, 5L, or 5.4L) or the M273 - actually there might be others - someone else can confirm.
Old 02-05-2016, 09:17 PM
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thank you
Old 02-08-2016, 10:22 PM
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Panamera Turbo, R63, "71 280SL
Love my R63 - get one of you can find one.

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