Mercedes-Benz has been hard at work cooking up an even hotter version of their wonderful SLS AMG for some time now. If the steady stream of spy photos is to be believed, development of the 2014 SLS AMG Black Series has been moving along nicely. However, a recent trip to the Nürburgring has resulted in a bit of a setback. The SLS AMG Black Series mule pictured above seems to have been nearer to production readiness than other mules we've seen recently, but as you can see, a fire cut its life short during testing at the 'Ring. No crash was reported and from what our spy photographer tells us, there were no injuries.

It's a shame because we've heard the 2014 SLS AMG Black Series will be around 100 pounds lighter than the standard SLS AMG, though some claim a 600 pound weight reduction. We've also heard that it will be powered by what is perhaps the finest mill AMG has ever slapped together, the magnificent M159 6.2-liter V8. In the SLS AMG Black Series, that incredible motor could be tuned to make around 650 hp, according to rumor.

In any case, Mercedes should be back to testing the blacker than black SLS AMG Black Series soon enough. Stay tuned for the details as we get them.

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