The Jetta sedan has a spacious rear seat and trunk but the good news mostly ends there. Handling lacks agility and interior fit and finish is unimpressive in the S and SE. The coarse-sounding 2.5-liter five-cylinder gets a mediocre 25 mpg overall. The four-cylinder diesel gets an impressive 34 mpg overall, but the automated manual transmission is not smooth at very low speeds. The hybrid version smoothly alternates between gas and electric power, and gets an impressive 37 mpg overall. The sporty GLI is quick, agile, and enjoyable to drive and has a nicer interior. The diesel has average reliability and is recommended; the base four- and five-cylinders are below average; and the hybrid is unknown.