Atecas come with carpet floor mats free. They are the same fitting as the Leon mk3 and Golf Mk7s so plenty of choice for those that want to change them. Probably Skoda mats as well
One thing to note is the rake of the crash cage which is pretty steep compared to other cars so if you are into cutting to size or fitting other mats they are likely to drop down and on the pedal side and get in the way. The surface under the peddles is pretty uneven below the fitted carpet so whatever you do the mats will have to stop short of the rake which generally means sticking to the stock Ateca / Leon mk3 / Golf mk7 mats or cut to that size with the scattered pebbles around the edge. The front fitted mats clip into place.
One thing to note is the rake of the crash cage which is pretty steep compared to other cars so if you are into cutting to size or fitting other mats they are likely to drop down and on the pedal side and get in the way. The surface under the peddles is pretty uneven below the fitted carpet so whatever you do the mats will have to stop short of the rake which generally means sticking to the stock Ateca / Leon mk3 / Golf mk7 mats or cut to that size with the scattered pebbles around the edge. The front fitted mats clip into place.