Lubricant composition comprising traction coefficient additive

A lubricant composition, suitable for use in an electric vehicle, comprising a base stock and at least 2 wt % of a traction coefficient additive compound, based on the total weight of the lubricant composition, 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.