You're going to have to look under the car and hood to see where the gas is coming from. If you see a wet spot under the car, suspect a rusted fuel line. That leakage will only occur when the engine is running, and it will slowly stop within a few minutes of stopping the engine. Your car is rather new to have rusty fuel lines already.
Under the hood, first look for the rubber hoses that connect the metal fuel lines on the body to the fuel rail on the engine. A hose clamp could be loose or rusted apart, but dry-rotted and leaking hoses are more common. Next, look at each injector to see if one is wet. If you see that, suspect a leaking o-ring. Those can be replaced separately. Sometimes they shrink and leak in cold weather.
You will also need to check the EVAP system to see if it has been contaminated with raw fuel due to a part failure
This guide will show you how the EVAP system works, it may help you find the smell
https://www.2carpros.com/articles/how-emission-control-systems-work
Attached below you will find diagrams of the EVAP system
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Saturday, December 20th, 2014 AT 12:56 PM