Lubricant composition

The invention provides a lubricating oil composition comprising: a lubricating base oil having a kinematic viscosity at 100°C of 1-10 mm 2 /s, a %C p of 70 or greater and a %C A of not greater than 2; a first viscosity index improver of 0.01-10 % by mass, based on the total weight of the composition, wherein the first viscosity index improver is a poly(meth)acrylate having a weight-average molecular weight of not greater than 100,000; and a second viscosity index improver of 0.01-50 % by mass, based on the total weight of the composition, wherein the second viscosity index improver is a polymer having a weight-average molecular weight of 100,000 or greater and containing a structural unit represented by the following formula (1) in a proportion of 0.5-70 mol%, the composition having a kinematic viscosity at 100°C of 4-12 mm 2 /s and a viscosity index of 140-300. wherein R 1 represents hydrogen or a methyl group and R 2 represents a C 16 or greater straight-chain or branched hydrocarbon, or an oxygen-and/or nitrogen-containing C16 or greater straight-chain or branched organic group.