A high melt flow thermoplastic polyolefin composition, comprising: from 5 wt% to 45 wt% of a modifier including: (a) from 5 wt% to 40 wt% of a block composite, based on a total weight of the modifier, the block composite including (i) an ethylene-propylene copolymer, (ii) an isotactic polypropylene polymer, and (iii) a block copolymer including an ethylene-propylene soft block that has essentially a same composition as the ethylene-propylene polymer and an isotactic polypropylene hard block that has essentially a same composition as the isotactic polypropylene polymer, the soft block comprising from 20 wt% to 80 wt% of ethylene based on a total weight of the soft block, and the block copolymer including from 20 wt% to 75 wt% of the hard block, based on the total weight of the block copolymer, and (b) from 60 wt% to 95 wt% of a polyolefin copolymer, based on a total weight of the modifier, the polyolefin copolymer being derived from ethylene and at least one of a C 3 to C 10 alpha-olefin, and the polyolefin copolymer having a melt index from 10 g/10 min to 1500 g/10 min, according to ASTM D1238 and at 190 °C/2.16 kg, and a density from 0.850 g/cm 3 to 0.900 g/cm 3, and from 30 wt% to 95 wt% of a polypropylene polymer base that has a melt flow rate of at least 40 g/10 min, according to ASTM D 1238 and at 230 °C/2.16 kg, wherein the high melt flow thermoplastic polyolefin composition has a blended melt flow rate of at least 25 g/10 min, according to ASTM D1238 and at 230 °C/2.16 kg, and an MFR ratio is less than 2.0, the MFR ratio being a ratio of the melt flow rate of the polypropylene polymer base to the blended melt flow rate of the high melt flow thermoplastic polyolefin composition. from 5 wt% to 45 wt% of a modifier including: (a) from 5 wt% to 40 wt% of a block composite, based on a total weight of the modifier, the block composite including (i) an ethylene-propylene copolymer, (ii) an isotactic polypropylene polymer, and (iii) a block copolymer including an ethylene-propylene soft block that has essentially a same composition as the ethylene-propylene polymer and an isotactic polypropylene hard block that has essentially a same composition as the isotactic polypropylene polymer, the soft block comprising from 20 wt% to 80 wt% of ethylene based on a total weight of the soft block, and the block copolymer including from 20 wt% to 75 wt% of the hard block, based on the total weight of the block copolymer, and (b) from 60 wt% to 95 wt% of a polyolefin copolymer, based on a total weight of the modifier, the polyolefin copolymer being derived from ethylene and at least one of a C 3 to C 10 alpha-olefin, and the polyolefin copolymer having a melt index from 10 g/10 min to 1500 g/10 min, according to ASTM D1238 and at 190 °C/2.16 kg, and a density from 0.850 g/cm 3 to 0.900 g/cm 3, and (a) from 5 wt% to 40 wt% of a block composite, based on a total weight of the modifier, the block composite including (i) an ethylene-propylene copolymer, (ii) an isotactic polypropylene polymer, and (iii) a block copolymer including an ethylene-propylene soft block that has essentially a same composition as the ethylene-propylene polymer and an isotactic polypropylene hard block that has essentially a same composition as the isotactic polypropylene polymer, the soft block comprising from 20 wt% to 80 wt% of ethylene based on a total weight of the soft block, and the block copolymer including from 20 wt% to 75 wt% of the hard block, based on the total weight of the block copolymer, and (b) from 60 wt% to 95 wt% of a polyolefin copolymer, based on a total weight of the modifier, the polyolefin copolymer being derived from ethylene and at least one of a C 3 to C 10 alpha-olefin, and the polyolefin copolymer having a melt index from 10 g/10 min to 1500 g/10 min, according to ASTM D1238 and at 190 °C/2.16 kg, and a density from 0.850 g/cm 3 to 0.900 g/cm 3, and from 30 wt% to 95 wt% of a polypropylene polymer base that has a melt flow rate of at least 40 g/10 min, according to ASTM D 1238 and at 230 °C/2.16 kg, wherein the high melt flow thermoplastic polyolefin composition has a blended melt flow rate of at least 25 g/10 min, according to ASTM D1238 and at 230 °C/2.16 kg, and an MFR ratio is less than 2.0, the MFR ratio being a ratio of the melt flow rate of the polypropylene polymer base to the blended melt flow rate of the high melt flow thermoplastic polyolefin composition.