To decrease the cruising speed

Follow either of these procedures:
o Push the -/SET switch and hold it. Your vehicle will gradually slow down. Release the switch at the speed you want to maintain.
o Push the -/SET switch and release it immediately. The cruising speed will decrease by 1 mph (1.6 km/h) each time the -/SET switch is operated in this manner.
See also:
Heating and ventilation
There are three controls and two switches for
the heating and cooling system. They are:
1. Air flow control.
2. Fan speed control.
3. Temperature control.
4. Air intake control switch.
5. Air ...
SPEEDOMETER
Your Hyundai's speedometer is calibrated in miles per hour (on the outer scale)
and kilometers per hour (on the inner scale). ...
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) ...


