The entry-level Tucson GL is equipped with a high output 2.0-liter Theta II four-cylinder engine that produces an estimated 165 horsepower at 6,200 rpm and 146 lb.-ft. of torque at 4,600 rpm. Fuel economy estimates for the Tucson GL FWD model with available six speed automatic transmission SHIFTRONIC® are 23 mpg city/31 mpg highway. The FWD five-speed manual transmission model gets an estimated 20 mpg city/27 mpg highway. The 2.0-liter Theta-II also offers Dual Continuously Variable Valve Timing (CVVT) (intake and exhaust camshaft phaser). Major features include the application of a two-stage Variable Intake System (VIS) which enables switching between long and short intake runners resulting in an across-the-board performance increase. To reduce internal friction, engineers have applied a Diamond-Like-Coating (DLC) to the top surface of the valve tappets resulting in improved fuel efficiency. Engineers also expended considerable time and effort optimizing the oil pressure to achieve an ideal balance between durability and fuel economy.