Fourth generation (W177, 2018-present) · Premium family hatchback
Mercedes' factory Star Pattern rubber mats fit the A-Class retention hooks exactly and are inexpensive, which makes them a sensible baseline; where they fall short is depth. The hatch (W177) and the Saloon (V177) share the front pair, and the Saloon's rear footwell is only fractionally longer.
Three products we would look at first in this category. Fit for your Mercedes-Benz still comes first: check the compatibility list on the listing against your exact model and year, and read the model guide above.
Amazon Basics2-Piece All-Season Rubber Floor Mats
Front pair in trim-to-fit rubber; a cheap way to protect the original carpet mats.