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Matt, Mechanical Engineer
Category: Mercedes
Satisfied Customers: 22928
Experience:  BEng hons Mech engineering, in auto industry 22 years
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a class mercedes y reg petrol auto.wifes car .i have a bad

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a class mercedes y reg petrol auto.wifes car .i have a bad engine oil or exhaust smell in the car. I inspected the underside and found white sort of paint or plastic all over sump area..scraped off ..but when warm it smells like oily exhaust. when engine warm smell returns..its not air conditioning..smell makes your eyes run occurs when moveing or stopped at idle.

this sounds like you've run over a plastic carrier bag which has melted onto the exhaust and sump

sorry to say there's little that can be done other than to keep on driving it to melt it all off

probably best to go for a long motorway drive where you can get it hot with enough windspeed to keep fumes from entering the car
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