Our spies have sent us an second batch of pics depicting what could be the BMW X7 disguised as an all-wheel drive chassis testing mule based on the next-gen 7-Series.

Our spies have sent us an second batch of pics depicting what could be the BMW X7 disguised as an all-wheel drive chassis testing mule based on the next-gen 7-Series.

Caught for the first time testing back in October, the camouflaged 7-Series has returned and this time too it carries extra weight to simulate the added bulk of the upcoming X7. However, we are not entirely sure this is indeed BMW’s flagship SUV as the engineers from Bavaria could be testing the next generation 7-Series High Security. The extra weight could be there to mimic the armor plating of the HS version which will rival the Mercedes-Benz S-Class Guard.

If this is indeed the BMW X7, the model is bound to hit the market in 2017 or 2018 and it will be manufactured at the firm's factory in Spartanburg, South Carolina. It will be based on the next generation 7-Series from where it will inherit the engines and gearboxes. BMW could be cooking up a V12-powered version as well as a plug-in hybrid derivative but the rumors have not been confirmed so far.

A concept previewing the X7 will likely be introduced at a major auto show next year.

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