A Fisker Karma luxury plug-in hybrid car is seen at the sixth annual Alternative Transportation Expo and Conference (AltCar) in Santa Monica, California in this September 29, 2011 file photo. [Photo/Agencies]

Chinese auto parts producer Wanxiang Group, which bought stylish electric car pioneer Fisker Automotive from bankruptcy, is accelerating the relaunch of Fisker's Karma hybrid luxury car by using a design from the company's last year of production, people close to the companies said.

Wanxiang aims to reintroduce by next year Fisker's electric cars, which enjoyed a cult following for their streamlined design among early fans including actor Leonardo DiCaprio and pop star Justin Bieber before the company's demise in 2013.

The "new" Karma that California-based Fisker, acquired by Wanxiang earlier this year, is rushing to finish is based largely on the 2012 model, said the people, who asked not to be identified. Wanxiang's top US executive said in February the Karma would be reintroduced within a year.

"It will have to be nearly identical to the 2012 model, or it would need to go through (safety) testing and certification again," a person close to Fisker's suppliers said. "I don't think they want to put a lot of engineering into it either, as well as probably use up some of the old parts that are in inventory."

Co-founded by Danish designer Henrik Fisker in 2007, Fisker had a mission to build a beautiful, "European brands like Maserati and Aston Martin.

The company was an early rival of Tesla Motors Inc but their fortunes went in opposite directions. A series of missteps and recalls led to disappointing sales for Fisker and eventually the company's bankruptcy filing. Wanxiang acquired Fisker's assets for $149.2 million in a US bankruptcy auction in February.

Fisker does not plan to simply reintroduce the 2012 Karma, a source close to Fisker said. "Not 100 percent identical," the person said. "The new Karma will be different in many key areas. It will have noticeable upgrades." He declined to provide details.

Using the 2012 Karma design could present problems given it has older features and technologies. "You're not buying something that's considered 'state of the art' necessarily," the supplier source said. "It's a big hurdle to overcome."

A Wanxiang spokesman in China declined to comment on Thursday. People at Fisker's Costa Mesa, California, headquarters, where about 90 people work, said on Thursday they were not authorized to speak to the media.

A third source said Fisker has the necessary funding thanks to Wanxiang's backing. The source close to Fisker said the company was hiring people in the United States but declined to provide further details.

However, several sources were skeptical Fisker can meet the timeline laid out in February by Pin Ni, the head of Wanxiang's US unit. The source close to Fisker said the automaker needs to resolve issues related to suppliers and production location. He declined to elaborate but said Fisker was "not there yet."

The Karma, a hybrid-electric vehicle equipped with a small gasoline engine that kicks in when its on-board battery is depleted, previously had a starting price of around $100,000.

Battery maker A123 of China's Wanxiang resurrects from bankruptcy	China's auto parts firm makes last-minute Fisker bid