WeatherTech does not make a cargo mat for the 2018. When I bought mine last November, the shipped me something that looked like it would fit a van. Then they tried to convince me that I did not have a GT, but an Elantra sedan. After sending photos and measurements, they finally admitted that they do not have a fitted mat for the GT. Their fallback was to use a universal. It's not perfect, but it's better than nothing.