See also:

Efficiency & Drivability
Automakers have been racing to produce small cars that get great gas mileage using conventional engines, and Hyundai has succeeded on that front with the 2011 Elantra, which is powered by a new 14 ...

SIX-SPEED AUTOMATIC AND MANUAL TRANSMISSIONS
Hyundai's commitment to making the Hyundai Tucson extremely fuel efficient continues with a six-speed automatic transmission with SHIFTRONIC® manual control or a standard six-speed manual transaxl ...

Valve clearance
Inspect excessive valve noise and/or engine vibration and adjust if necessary. An authorized HYUNDAI dealer should perform the operation. ...