PROBLEM TO BE SOLVED: To provide a gasoline composition which excels in an environmental performance that the emission of carbon dioxide (CO) is greatly decreased or the like, in which the operability and the oxidation stability are excellent, and further which has excellent abrasion resistance.SOLUTION: The gasoline composition includes 5-25 vol% of isobutyl alcohol and a gasoline base, and meets the following requirements of (1)-(7). (1) A research method octane number is at least 96 and less than 103. (2) Sulfur content is at most 10 ppm by mass. (3) Aromatic content is at most 25 vol%. (4) Benzene content is at most 1.0 vol%. (5) Olefin content is at most 30 vol%. (6) A Reid vapor pressure (RVP) is 60-90 kPa. (7) A 30% distillate temperature is 40-90°C, a 50% distillate temperature is 70-100°C, a 70% distillate temperature is 95-125°C, and a 90% distillate temperature is 110-170°C.