The 2016 Porsche Panamera has been spied undergoing testing on the Nürburgring.

Caught virtually undisguised, the model has evolutionary design with a more cohesive appearance.  The changes are relatively minor but we can see curvaceous body work, a gently sloping shoulder line and an improved rear end which is better integrated into the overall design.

Bigger changes are expected under the skin as the second-generation Panamera is slated to ride on the new MSB platform that uses a mixture of aluminum and high-strength steel.  Thanks to these lightweight materials, the model could weigh up to 200 lbs (91 kg) less than its predecessor.

Engine options remain unconfirmed but Porsche chief engineer Wolfgang Hatz has previously suggested the car will be equipped with new V6 and V8 engines. 

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