See also:

40 MPG - AN 18 PERCENT IMPROVEMENT IN FUEL ECONOMY
The 2012 Hyundai Accent's highway fuel economy of 40 mpg is an 18 percent improvement over its predecessor's 34 mpg highway manual transmission fuel economy rating. Hyundai Accent's fuel economy ...

Exhaust pipe and muffler
Visually inspect the exhaust pipes, muffler and hangers for cracks, deterioration, or damage. Start the engine and listen carefully for any exhaust gas leakage. Tighten connections or replace part ...

Manual heating and air conditioning
The heating and cooling system can be controlled manually by pressing buttons or turning knob(s) other than the AUTO button. In this case, the system works sequentially according to the order of b ...