Kia’s D-segment challenger Optima will be available with a ‘cleaner’ diesel engine, a petrol option and new active safety technology when the revised model goes on sale in Q3 this year.

The model, available as a saloon or sportswagon, will benefit from two new powertrain options: Kia’s all-new ‘U3’ 1.6-litre CRDi diesel engine and a 1.6-litre T-GDi petrol engine.

As well as refreshed exterior and interior design, the new Optima also features Kia’s latest active safety and in-car connectivity technologies.

The Optima last year sold more than 16,800 units last year.

Michael Cole, chief Operating Officer of Kia Motors Europe, said: “The Optima enjoyed a record year of sales in Europe in 2017.

“It is a key contributor to Kia’s sustainable growth in Europe, and the Optima’s sales momentum has been maintained through the introduction of new variants in 2017.

“These include Sportswagon and high-performance GT variants, and an ultra-low emissions Plug-in Hybrid powertrain.

“With a model to meet every requirement, the Optima’s refreshed design, new engines and expanded range of technologies will further broaden its appeal, for corporate and private buyers alike.”

No emissions or efficiency data has yet been released for Kia’s new diesel engine, but the manufacturer said it is designed to go beyond the stricter limits laid down by the Euro 6d TEMP emissions standard.

However, Kia says the new 1.6 CRDi, which replaces the 1.7 CRDi engine, employs selective catalytic reduction active emissions control technology to significantly reduce emissions.

The new engine therefore produces low CO2, particulate matter and NOx emissions.

It also produces 136PS and 320Nm of torque.

The Optima will also be available with Kia’s 180PS 1.6 T-GDi. It is paired with a seven-speed double-clutch transmission.

A new Drive mode will allow drivers to switch between Eco, Comfort, Sport and Smart modes.

Each mode enables the driver to customise the powertrain’s responses, prioritising fuel economy or more immediate acceleration. It also lets drivers adapt the weight of the rack-mounted power steering system.

Smart Mode is designed to anticipate the driver’s needs, switching automatically between Eco, Comfort and Sport modes depending on conditions.

Exterior changes include a revised front bumper, as well as new LED tail-lamps and a revised design for the head- and fog lamps.

Saloon models also feature a new rear bumper design.

The interior features a newly-designed steering wheel and satin-chrome trim on the centre console. It also features new ambient lighting around the dashboard and doors.

The Optima is available with Kia’s latest advanced driver assistance systems (ADAS).

The manufacturer’s new Driver Attention Warning system combats distracted or drowsy driving by monitoring a number of inputs from the vehicle and driver.

It sounds a warning chime and displays a graphic in the instrument binnacle if it senses a lapse in concentration from the driver.

Other safety features available on the Optima include Forward Collision-avoidance Assist with pedestrian recognition, Lane Keeping Assist, High Beam Assist, and full LED headlamps with Dynamic Bending Light.