Lubricating oil composition

A lubricating oil composition, comprising:

• a base oil that is present in a range of from 60% to 99% by mass, based on a total amount of the lubricating oil composition;
• a dispersant-type viscosity index improver selected from the group consisting of a dispersant-type nitrogen-containing poly(meth)acrylate and a dispersant-type nitro-containing polyolefin and having a weight-average molecular weight in a range of 120,000 to 240,000;
• a non-dispersant-type viscosity index improver which is a non-dispersant-type poly(meth)acrylate having a weight-average molecular weight in a range of 280,000 to 310,000;
• and
• a molybdenum-based friction modifier which is a binuclear molybdenum dithiocarbamate selected from the group consisting of a compound of formula (D-1) and a compound of formula (D-2),
• where R11 to R14 each independently are a hydrocarbon group having 6 to 22 carbon atoms, X11 to X18 each independently are an oxygen atom or a sulfur atom, and at least two of X11 to X18 are sulfur atoms,
• wherein the dispersant-type viscosity index improver has a nitrogen atom content in a range of 0.77% to 1.05% by mass, based on a solid content of the dispersant-type viscosity index improver, a content of the dispersant-type viscosity index improver in terms of the solid content is in a range of 0.11% to 0.32% by mass, based on the total amount of the lubricating oil composition, a content of the non-dispersant-type viscosity index improver in terms of the solid content is in a range of from 1.4% to 2.1% by mass, based on the total amount of the lubricating oil composition, a content of the molybdenum-based friction modifier in terms of the solid content is in a range of from 0.10% to 0.70% by mass, based on the total amount of the lubricating oil composition, and a solid content mass ratio of the non-dispersant-type viscosity index improver to the dispersant-type viscosity index improver is in a range of from 4.4 to 12.7.