Performance

In terms of horsepower, the average sedan packs quite a wallop and will knock the Rio down a few rungs. However, bear in mind that high horsepower engines often command higher insurance premiums.

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    Overheating
    If your temperature gauge indicates overheating, if you experience a loss of power, or if you hear a loud knocking or pinging noise, the engine has probably overheated. Should any of these sympto ...

    POWER AND FUEL-ECONOMY ARE UP TO PAR
    That description might have you thinking the Optima has all sorts of power. True, the upgraded 2.4-liter four-cylinder gets added power for ’09 with 175hp and 169 ft-lbs of torque, but it’s no ...

    Manual climate control system
    1. Fan speed control knob 2. Air intake control button 3. Mode selection knob 4. Temperature control knob 5. Air conditioning button (if equipped) Heating and air conditioning 1. Start the ...