Other Fuel System Hoses Lines/piping, And Fittings Problems of Mercedes Benz C55

Very strong fuel odor inside cabin of vehicle while driving. Odor is very strong around drivers rear wheel and from the outside once parked. Smell of fuel is very strong at times while driving but seems to dissipate when driving at a faster speed I. E. On highway over 45mph. Once I come to a stop or drive below 45mph the smell is pronounced probably because it isn't being blown away from the vehicle while driving. Does not change in correlation to fuel tank fill level. Inspected fuel sender under access cap, underneath rear passenger bench driver's side on April 9th 2021. Found fuel puddling in/around the exterior of fuel sending unit. Cleaned out fuel puddle. Most of these symptoms are also similar to case with the 2003-2006 Mercedes Benz e55 amg and cls vehicles found under NHTSA action number: ea13003 regarding emissions recall for amg models using high pressure fuel systems.

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Very strong fuel odor inside cabin of vehicle while driving. Odor is very strong around drivers rear wheel and from the outside once parked. Also noticed gasoline/fuel accumulation underneath vehicle around driver's side rear, on under body panels. Smell of fuel is very strong at times while driving but seems to dissipate when driving at a faster speed I. E. On highway over 45mph. Once I come to a stop or drive below 45mph the smell is pronounced probably because it isn't being blown away from the vehicle while driving. Does not change in correlation to fuel tank fill level. Inspected fuel sender under access cap, underneath rear passenger bench driver's side on August 27th 2016. Found fuel puddling in/around the exterior of fuel sending unit. Fuel sending part number a209-470-04-94 cleaned out fuel puddle and reinspected access to panel to fuel sender on September 3rd and found the fuel sender area has puddled with gasoline again. Check engine light periodically turns on with code p0171 usually a month in between dating back to 2015. Coinciding with the fuel smell. Inspected gas cap/filler tube for leaks as precaution but found no leak. Most of these symptoms are also similar to case with the 2003-2006 Mercedes Benz e55 amg vehicles found under NHTSA action number: ea13003 regarding emissions recall for amg models using high pressure fuel systems.