The invention discloses a gear oil composition for an automobile. The gear oil composition for the automobile comprises viscosity blend base oil, a sulfur-containing extreme pressure additive, a phosphorus-containing wear-resistant additive, an antirust additive, a metal passivator and a synthetic ester oiliness additive, wherein the synthetic ester oiliness additive may be one or more of trimethylolpropane trioleate, octyl stearate, butyl stearate, isooctyl stearate and isooctyl palmitate; and the synthetic ester oiliness additive accounts for 2 to 10 percent of the total weight of the gear oil composition. The gear oil has the advantages of high wear resistance, high maximum non-seizure load, high load-bearing capacity, high viscosity index, high low-temperature flowability, high lubricating property and the like, is suitable for the lubrication of an automobile manual gearbox and a rear drive axle gear and is also suitable for an automobile automatic gearbox.