Porsche Panamera Turbo goes against Mercedes-AMG E63 in 1,145 HP rumble

This instrumented test is all about power against weight

Powerful as they are, both the Porsche Panamera Turbo and Mercedes-AMG E63 have serious weight issues to overcome. That's why they need huge power reserves and four-wheel drive to cope with this task.

Cheaper and a tad lighter, the E63 promises a more enthusiastic road presence but then again, it goes up against the new Panamera Turbo which is a Porsche.

On paper, they're both as scary as they come. The Merc-AMG E63 churns out 604 hp and 850 Nm from a 4.0-liter bi-turbo V8 while the Porsche Panamera Turbo relies on a 4.0-liter V8 yanking out 550 hp and 770 Nm.

But the real question is: how will they handle the track test? AutoExpress set out to discover just that. Here's what they found out:

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