; and (ii) technically and economically feasible. (2) Fuel retailers Any fuel retailer selling gasoline for use in a motor vehicle described in section 261(b) shall incorporate into the dispensing equipment of the fuel retailer such devices or elements of design (including physical or other barriers, devices, or technological systems) as are determined by the Administrator to be— (A) necessary to ensure compatibility with the motor vehicle design requirements under paragraph (1); and (B) technically and economically feasible. (c) Design requirements for model year 2033 (1) Manufacturers Subject to paragraph (3)(B), beginning in model year 2033, the manufacturer of a motor vehicle described in section 261(b) shall design each such motor vehicle— (A) to use gasoline with a 98 research octane number or higher; and (B) to incorporate such devices or elements of design (including physical or other barriers, devices, or technological systems) as are determined by the Administrator to be— (i) necessary to prevent the introduction of gasoline with a research octane number that is lower than 98 into that motor vehicle; and (ii) technically and economically feasible. (2) Fuel retailer Subject to paragraph (3)(B), any fuel retailer selling gasoline for use in a motor vehicle described in section 261(b) that is model year 2033 or later shall incorporate into the dispensing equipment of the fuel retailer such devices or elements of design (including physical or other barriers, devices, or technological systems) as are determined by the Administrator to be— (A) necessary to ensure compatibility with the motor vehicle design requirements under paragraph (1)