I have 41K miles and.. my check engine light goes on sometimes and then it goes off.

I am taking the car in for a diagnosis. Anyone else have this problem.

Other than emission-related component failure, the easy things to look for are:

1. Have you recently fueled up with 87-grade octane?

2. Did you close the gas cap firmly (three twists followed by that ratchety "click")?

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2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car

I would assume, everytime your CEL goes on, the ECU should log a fault code in memory.
A scan of the ECU should reveal what the intermittent problem was ( is ).

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2007 C 230 Sport.