Fisker, the California-based startup that does sexy electric cars, has announced an engine deal with BMW for its new range. Codenamed Nina, the new line up will slot in between the Audi A5 and A6 in size, and will go on sale in late 2013. Currently, Fisker has the Karma plug-in hybrid sports sedan, which will spawn a new variant debuting in Frankfurt.

The Nina range will use Munich’s new-generation 2.0-litre turbocharged petrol engine and the same 20 kWh battery pack and range-extending engine/generator layout as the Karma. This family will have three models initially, the first of which will be a “radically styled” sedan. They will be built at an ex-General Motors plant in Delaware USA, which used to churn out Saturn Sky and Pontiac Solstice roadsters.

With that on board, Fisker will have two model lines in 2015, when it hopes to be making over 100,000 cars per annum. Very ambitious, but Henrik Fisker’s company says it has already secured 45 dealers each in the US and Europe, while eyeing 20 dealers in China. Click here to see shots from Fisker’s “Pure Driving Passion” marketing campaign.