BMW 328i fuel leak from driver side tank when over 3/4 full, raw fuel smell after parking on BMW 328i

Some BMW 328i owners report experiencing fuel leaks from the driver side tank when it is over 3/4 full, accompanied by a strong smell of raw fuel after parking. These leaks may originate from the top of the tank and trickle down, causing the odor. Additionally, some owners find the leak occurring around 8 inches in front of the driver's side rear wheel, near the fuel filter, where cracked rubber lines could be the cause. A faulty pressure regulator has been noted to produce a strong smell in the driver's side rear wheel well, while issues with the fuel pump may lead to a stronger odor on the passenger side. To identify the source of the leak, some owners recommend disconnecting the battery, draining most of the gas, and checking for gas accumulation after drying the neck of the tank. The fuel filter, located underneath the back seat on the driver's side, is another potential culprit, and replacing it has resolved similar issues for some. However, challenges may arise when detaching the main fuel line and hoses during the replacement process. For a cost-effective solution, some owners suggest ordering a replacement kit for the fuel pump transfer side instead of replacing the entire pump assembly. Inspecting these components is crucial for addressing the fuel leak in the BMW 328i.