Mercedes’ SLS roadster has been spied in winter testing in Scandinavia.

The open-top SLS won’t have the gullwing doors of its coupe brother. It is likely to feature a retractable soft-top roof similar to that seen in the recently unveiled E-class cabriolet.

Mercedes SLS roadster spy pics

The SLS roadster will be powered by the same 563bhp/479lb ft 6.2-litre V8 as the coupe. An electric version is also being developed.

Electric SLS: more details

Expect a 0-62mph time of around four seconds, up from the coupe's 3.8sec because of the roof mechanism and the extra body strengthening.

Prices are expected to be 10 per cent higher than the coupe, starting at around £165,000. The car is tipped to be launched in the middle of 2011.

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