Lubricant composition comprising traction coefficient additive

A lubricant composition, suitable for use in an electric vehicle, comprising at least 50 wt % of a base stock based on the total weight of the lubricant composition and at least 7 wt % of a traction coefficient additive compound, based on the total weight of the lubricant composition, wherein the traction coefficient additive is present in an amount effective to provide a reduced traction coefficient and wherein the traction coefficient additive is of the Formula (I):

• R1[(AO)n—R2]m (I)
• wherein:
• R1 is the residue of a group having at least 2 active hydrogen atoms;
• m is at least 2;
• AO is an alkylene oxide residue;
• each n is independently from 0 to 100;
• and
• each R2 is independently H or R3, where each R3 is independently a residue of a polyhydroxyalkyl or polyhydroxyalkenyl carboxylic acid, a residue of a hydroxyalkyl or hydroxyalkenyl carboxylic acid and/or a residue of an oligomer of the hydroxyalkyl or hydroxyalkenyl carboxylic acid;
• and
• on average at least 0.5 of R2 groups are R3;
• and
• wherein the lubricant composition is in contact with the power train of the electric vehicle in a manner effective to reduce the traction coefficient in a gear box of the powertrain.