A new concept sedan that is set to form the basis for the next-generation Kia Optima will be uncovered at the 2015 Geneva motor show in March.
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A teaser image of the new model has been released by the brand, with Kia stating the "new D-segment model" - which is the 11th concept car created by Kia’s European design studio in Frankfurt, Germany - offers up "confident, powerful lines that sweep elegantly from Kia’s hallmark ‘tiger-nose’ grille towards the rear of the vehicle".

According to the brand, the new concept car "embodies modern design and refined, understated energy". To our eye, it looks like a more US-focused version of the Optima compared with the current model, which is more European in its lines.

"The concept has been created as a spacious and versatile accessory to an active lifestyle, as a purposeful, energetic design study for the style-conscious, and as a sanctuary from the stresses of the modern world," the company said.

CarAdvice's spies have caught the new-generation Kia Optima testing in recent months, and that model is expected to be offered with the carry-over 2.4-litre four-cylinder engine, as well as a 2.0-litre turbo petrol.

On top of that, a petrol-electric hybrid is expected to be offered, potentially alongside a new diesel hybrid based on the Optima T-Hybrid concept that was unveiled at the 2014 Paris motor show. That car featured a 1.7-litre turbo diesel-electric system with a large-capacity (48-volt) battery, a supercharger and electric motors that the brand said could increase power by 20 per cent and reduce fuel consumption by 20 per cent.

The new-generation Kia Optima is expected to reach Australian showrooms either late this year or early in 2016.

Stay tuned for more on the Kia concept sedan in the coming weeks.