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Lou P. master tech
Lou P. master tech, Mercedes Technician
Category: Mercedes
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Experience:  15 years master certified 100% fix rate and have access to factory radio codes, wiring, and instructions.
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Mercedes 2009 C300 4 matic. What damage could I have done

Customer Question

Mercedes 2009 C300 4 matic. What damage could I have done driving in D1 for an extended period? The car now sounds quite loud.
Submitted: 1 year ago.
Category: Mercedes
Expert:  Lou P. master tech replied 1 year ago.

Hello you should not have done any damage because if the engine RPMs exceed a certain limit the car will actually upshift for you. How far and how long did you drive in D1 ?

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