Thermoplastic polyolefin containing amorphous ethylene elastomer

A thermoplastic polyolefin composition comprising:

• a polypropylene having a melting point temperature (Tm) of greater than 130° C. and a melt flow rate (230° C./2.16 kg) within the range from 10 g/10 min to 60 g/10 min;
• an ethylene-propylene copolymer comprising within the range from 40 wt % to 55 wt % ethylene derived units and having a melt flow rate (230° C./2.16 kg) within the range from 0.1 g/10 min to 20 g/10 min, a Mw/Mn within the range from 1.8 to 4.0, a high-load melt flow rate (ASTM D 1238, Condition L (230° C.), 21.6 kg) within the range of from 100 g/10 min to 280 g/10 min, and a weight average molecular weight (Mw) within a range of from 50,000 g/mole to 300,000 g/mole;
• and
• from 0.1 wt % to 5 wt %, based on the weight of all ingredients of the composition, of a propylene-based elastomer having within the range from 9 to 18 wt % ethylene derived units and having a melting point temperature (Tm) of less than 110° C., a weight average molecular weight (Mw) of at least 150,000 g/mole, a heat of fusion (Hf) of less than 40 J/g (first melt), and a Mw/Mn within the range from 2.0 to 4.0;
• wherein the composition only partially breaks or there is no break at 22° C. (ASTM D 256) with Notched Izod Force of between 10 to 40 ft-lb/in2.