The manual says: "Unleaded petrol with a Pump Octane Rating of 87 (Research Octane Number 91) or higher must be used in your Hyundai." It also says a mixture of 90% unleaded and 10% ethanol may be used until the engine develops driveability problems which then 100% unleaded gasoline is recommended. It also recommends detergent additives in the
2020 Hyundai Accent Specs Fuel: Fuel tank capacity: 11.9 gal. EPA mileage estimates: 29 City / 39 Hwy: Performance: Base engine size: 1.6 liters: Base engine type: I-4:Quick Specs. Gas Mileage 27 mpg City/36 mpg Hwy. Engine Gas I4, 1.6L. EPA Class Compact. Style Name 3dr HB Auto GS *Ltd Avail*. Drivetrain Front Wheel Drive. Passenger Capacity 5. Passenger Doors 2. Car fuel with highway drive: 5.1 litres/100 km (45,89 miles per gallon). Car fuel with mixed drive: 6.2 litres/100 km (37,75 miles per gallon). Car fuel with city drive: 8.2 litres/100 km (28,55 miles per gallon). Car fuel tank capacity: 45.0 litres (11,83 gallons). How much fuel consumed Hyundai Accent 1.5 l, liters / 100 km or miles per gallon. 2008 Accent GLS 4dr Sedan specs (horsepower, torque, engine size, wheelbase), MPG and pricing. 2008 Hyundai Accent Specs Fuel: Fuel tank capacity: 11.9 gal. EPA mileage estimates: 27 City . 61 33 210 431 450 469 459 295