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There are a lot of important points to make about the all-new 2012 Kia Rio Sedan, but the most surprising is that it will be the first in the sub-compact segment to feature start-stop technology. Called Idle Stop and Go (ISG for short), the Rio will completely shut off its gasoline engine when at a stop and immediately restart it just before the gas pedal is pressed.

Powered by the same 1.6-liter direct-injection engine found in the new 2012 Hyundai Accent, the Rio also gets the same 30-mpg city and 40-mpg highway rating. Those EPA ratings don’t include technology like ISG, however, so real-world fuel economy could exceed the EPA estimates.

And as impressive as those fuel economy numbers are, the Rio doesn’t loose out in power either, making 138-hp and sharing the title of the most potent engine in the sub-compact class.

Kia continues to deliver in the design department as well, offering more style in the sub-compact segment than you’d expect. The Rio sedan even gets a slightly different front end to its Rio5 hatchback counterpart.

Available in three trim levels LX models include 15-inch steel wheels and not much else, while the EX trim brings features like power locks, windows and keyless entry as well as Bluetooth. The top-level SX trim includes fog lights, LED daytime running lights, dual chrome-tipped exhaust pipes, turn signal indicators, a leather wrapped steering wheel, the Microsoft UVO infotainment system with a rear-view camera and 17-inch wheels.

Options include that ISG setup as a part of the Eco Package, while SX models can be had with the Premium Package that delivers navigation, a push-button start, leather heated seats and a moonroof.

Official pricing has yet to be released, but the Rio will start at under $13,000.

GALLERY: 2012 Kia Rio Sedan

There are a lot of important points to make about the all-new 2012 Kia Rio Sedan, but the most surprising is that it will be the first in the sub-compact segment to feature start-stop technology. Called Idle Stop and Go (ISG for short), the Rio will completely shut off its gasoline engine when at a stop and immediately restart it just before the gas pedal is pressed.

Powered by the same 1.6-liter direct-injection engine found in the new 2012 Hyundai Accent, the Rio also gets the same 30-mpg city and 40-mpg highway rating. Those EPA ratings don’t include technology like ISG, however, so real-world fuel economy could exceed the EPA estimates.

And as impressive as those fuel economy numbers are, the Rio doesn’t loose out in power either, making 138-hp and sharing the title of the most potent engine in the sub-compact class.

Kia continues to deliver in the design department as well, offering more style in the sub-compact segment than you’d expect. The Rio sedan even gets a slightly different front end to its Rio5 hatchback counterpart.

Available in three trim levels LX models include 15-inch steel wheels and not much else, while the EX trim brings features like power locks, windows and keyless entry as well as Bluetooth. The top-level SX trim includes fog lights, LED daytime running lights, dual chrome-tipped exhaust pipes, turn signal indicators, a leather wrapped steering wheel, the Microsoft UVO infotainment system with a rear-view camera and 17-inch wheels.

Options include that ISG setup as a part of the Eco Package, while SX models can be had with the Premium Package that delivers navigation, a push-button start, leather heated seats and a moonroof.

Official pricing has yet to be released, but the Rio will start at under $13,000.

GALLERY: 2012 Kia Rio

The all-new 2012 Kia Rio will sedan will debut at the New York Auto Show, with a strong possibility that it will house a significantly more powerful engine than its European counterpart.

At the Geneva Auto Show last month, Kia unwrapped the Rio hatchback, sporting a turbocharged direct-injection 1.2-liter 4-cylinder engine. North American models, however, are likely to feature the same 1.6-liter gasoline direct-injection engine as found in the new 2012 Hyundai Accent, which makes an impressive 138-hp and should achieve approximately 41-mpg on the highway.

Kia hasn’t confirmed as much, but with the Rio a sister car to the Accent and Hyundai-Kia’s long standing powerplant sharing, a 138-hp Rio is a safe bet.

GALLERY: 2012 Kia Rio Hatchback

Find a full preview and coverage of the NY Auto Show here.