See also:

Fuel recommendations
Use Unleaded Gasoline Unleaded gasoline with a Pump Octane Rating of 87 (Research Octane Number 91) or higher must be used in your Hyundai. WARNING: o Do not "top off" after the nozzl ...

2011 Hyundai Sonata review by Sherrice Gilsbach
The 2011 Hyundai Sonata is a solid family sedan that offers gorgeous exterior styling and impressive gas mileage, but it lacks expressive drive-feel and is low on the fun factor. For many folks, g ...

40 MPG POWERTRAIN
Under the hood, the Hyundai Elantra is powered by an all-new 1.8-liter Nu four-cylinder engine with 148 horsepower and 131 lb-ft of torque (145 horsepower and 130 lb-ft of torque for Elantra PZEV) ...