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Marty, ASE Certified Technician
Category: Mercedes
Satisfied Customers: 55165
Experience:  Bosch Certified Master Technician with over 35 years experience in the automotive industry.
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I unfortunately put petrol in my diesel 220cla last

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Hi I unfortunately put petrol in my diesel 220cla last Wednesday evening and drove for nearly a mile before I realised my mistake. It has been on the forecourt of my local mercedes dealer waiting for repair since which I am been told is now next Tuesday I am now thinking should I remove it due to the delay and send it to a cheaper approved garage or would it be wiser to leave it there

Hi, my name is***** would suggest that you TOW the car to an independent Mercedes specialist to have the fuel tank drained and the filters replaced. Most Mercedes dealerships tend to make a bigger problem out of these situations than is actually the case. Emptying the tank and refilling with fresh diesel and replacing the fuel filter should resolve this problem.

Under no circumstances should you try to drive the car. Don't even try to start it until the tank has been drained and refilled with fresh diesel.

Customer: replied 8 months ago.
Thanks Marty you have said what I was thinking will have it towed of course do you think the small distance I did drive my vehicle might of caused damage.

More than likely no harm has been done. The concern is damage to the high pressure fuel injection system but in most cases they do survive this.

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