All 2008 Kia Rio models are powered by a 110-horsepower, 1.6L four-cylinder engine, matched with either a five-speed manual of four-speed automatic transmission, and all are front-wheel drive. With the five-speed manual, the Rio returns 32 mpg city, 35 mpg highway in the EPA cycle.
The fun-to-drive aspects are emphasized in the Rio's economical design. The engine has continuously variable valve timing for responsiveness, while the power steering is engine-speed-sensitive. The suspension is tuned for a smooth ride yet crisp control, with MacPherson struts and a stabilizer bar in front combined with a semi-independent setup in back.
The Rio has more interior space than most cars its size and also has a generous 11.9 cubic feet of cargo space in the sedan, 15.8 cubic feet for the Rio5. When the Rio5's split-folding back seat is in the forward flat position, cargo space is expanded to nearly 50 cubic feet. Inside, all models have an eight-way adjustable driver's seat with fold-down armrest, a versatile center-stack storage tray, and rear mesh seatback pockets.
A full set of side air bags-front seat-mounted side air bags and full-length side-curtain bags-are both standard, however electronic stability control is not available, and anti-lock brakes are optional on LX and SX models but not available on the base model.
The Rio is now available in three different trims-a price-oriented base model, the LX, which includes many popular 'must have' features, and the sportier SX, which adds a sporty appearance and feel along with some extra conveniences. All models, including the base, come with a rear defroster and dual 12-volt power outlets. LX models add air conditioning, tilt steering, a CD sound system with audio input jack, plus adjustable rear headrests and split-folding rear seats. SX models add a dash of style with red-stitched gray sport seats and door trim, metal accents for the dash and doors, and a leather trimmed steering wheel and shift knob.
A new value-priced Kia Rio5 LX model has been added to the 2008 lineup for those who like the hatchback body style but are on a tight budget. Previously the Rio5 was only available in top SX trim. The value-leader base model is still only offered as a sedan.
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 2008 KIA RIO STYLING | [7 out of 10]
Cars.com: "a European-inspired exterior"
Edmunds: "some cheap plastic trim"
Car and Driver: "it looks like something you might actually want to drive"
TheCarConnection.com found that reviewers consider the 2008 Kia Rio to be somewhat attractive, but not thrilling, even at its low price.
The 2008 Kia Rio has two body styles to choose from: the Kia Rio four-door sedan and the five-door. Cars.com touts the exterior features that give both Rios a decent amount of pizzazz: a black mesh grille, "swept-back" headlights, bumpers with black inserts, and black body-side moldings. According to Cars.com, the Rio's profile has what Kia calls a "subtle wedge shape, with sculpted arches at each fender." Kelley Blue Book thinks it's "quite the looker," and J.D. Power says the Kia's "European-influenced appearance imparts a sporty and youthful character into an entry-level automobile."