SL55/63/65/R230 AMG: noise from the back of the car
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Join Date: Jul 2004
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2015 S550, 2015 SL550, 2015 Lamborghini Huracan
noise from the back of the car
If you hear a flapping sound from the back of your SL, that happens when the gas tank goes bad. My SL55 started have the clonking sound from the back whenever I stop hard or accelerate hard. I took in the car and they needed to change the whole gas tank. The service supervisor says that there is a flap in the gas tank that sometimes comes loose.