GM Daewoo Auto & Technology (GM Daewoo) launched a show car version of its future L4X flagship at the Seoul motor show.

The automaker, source of most of the Chevrolet-badged models GM sells outside North America, said the show car was "close to a production version [and] permits a first glimpse into what GM Daewoo is pursuing as its premium large sedan. [The] future flagship will boast a superior level of refinement, safety and comfort features."

The L4X has a 3.6-litre V6 engine with five-speed automatic transmission. The GM-Daewoo version of GM's global engine generates peak power and torque of 258hp at 6,500 rpm and 34.7 kg/m of torque at 3,200 rpm.

It sits on a claimed longest-in-class 3,009mm wheelbase with "world-class structural stiffness and a sophisticated rear-wheel-drive system".

Detail highlights include signature LED repeater lamps in the fender vents, LED tail lamps and bright chrome accents.

The production model will have numerous safety and convenience features, including a navigation system with digital multimedia broadcasting (DMB) TV, bi-xenon headlamps, curtain air bags, tri-zone automatic temperature controls, power rear seats with three-step temperature control heating and rear-back massage, power rear-window curtains, roller blinds, a rear view camera and power-folding exterior mirrors.

Meanwhile Renault-Samsung introduced a new crossover at the Seoul show. The QMX (Quest Motoring Xperience) was developed under the code name H45 and is a sister model to the Renault Koleos.

It is powered by a 177 hp 2.0 dCi engine with piezo-electric injectors and a variable geometry turbocharger.

Other features include hill start assist, hill descent control and a clamshell tailgate.

Hyundai Motor unveiled three new models including the Veloster, a sporty coupe said to cater to the unique requirements of the Y-generation.

Joining this concept were two production models: the TQ van, a redesign of Hyundai's H-1 van and the FD estate wagon, styled at the company's European design centre in Russelsheim, Germany, which will marks the Korean automaker's return to making C-segment wagons.

The Veloster was styled at Hyundai´s design and technical centre at Namyang and is the third in a series of concept cars to be developed by this central styling studio in Korea.

The Veloster name, a compound of velocity and roadster, is said to evoke the sporty characteristics of a classic two-plus-two. A panoramic glass roof and other futuristic styling cues help project a high-tech image.

"With Veloster, we wanted to try something really different. We´re keenly aware that we need radically new products for the Y-generation, the first-time 20-something buyer," said Oh Suk-Geun, Hyundai´s vice president of design. "This is really a bold new direction," he added.

The redesigned H-1 van (project codename TQ) comes in passenger van and commercial van versions. The people mover is available in a variety of seating layouts: eight, nine, 11 or 12 passenger while the commercial van comes in two, three, five and six seater versions for a high degree of versatility.

For all markets outside of Korea and the EU, power comes from a 2.5-litre turbocharged intercooled engine (4D56). Euro-III emissions-compliant, the 4D56 delivers 100ps of power and 23kg/m of torque while travelling up to 9.4km on a litre of fuel. It's mated to a five-speed manual gearbox or the optional four-speed automatic.

For the EU and Korean markets, the H-1 gets the A 2.5 CRDi, a Euro-IV compliant engine which, with a variable geometry turbocharger delivers 170ps and 40kg/m of torque. The base gearbox is a five-speed manual but an automatic is optional, in either four- or five-speed versions, depending on local market requirements.

For markets requiring petrol power, the 170ps 2.4-litre Theta engine is new to the range.

Key new H-1 exterior features include the addition of dual sliding side doors, twin swing rear doors (commercial van only), enlarged wheels and tyres, reverse warning system (passenger van only) and a sliding side window (wagon only).

New interior details include the mounting of the transmission gear shift lever in the dashboard centre for free movement between the driver seat and front passenger seat and the addition of an overhead storage console. The new H-1 is also fitted with an electro-chromic rear view mirror and new roof-mounted air vents for improved cooling and heating throughout the cabin.

Production of the diesel versions starts in August 2007 and petrol models follow in November 2007.

Following the unveiling last month of the i30 five-door hatchback at the Geneva motor show (it's a sister model to subsidiary Kia's eastern European-built Ceed), Hyundai is adding the FD estate wagon which marks Hyundai´s long-awaited return to this popular and hotly contested segment in Europe.

Design details include projection headlamps, a USB port for connecting portable music players, a smart folding key system for convenient access to the vehicle, a built-in roof rack for maximum cargo-carrying utility and repeater lamps built into the side view mirror housings.