The launch of Hyundai's first Theta engine in the 2004 Sonata helped signify that the Korean automaker was moving beyond its 20th-century origins. Available in 2.0- and 2.4-liter displacements, the ...

Four-cylinder engines have long been celebrated for offering a great balance of fuel economy and affordability without the need to sacrifice everyday drivability. But not every four-pot powerplant ...