We drove the Porsche Panamera Turbo and the Cadillac CTS-V to see which mega-sedan was better - here's the verdict

Matthew DeBord/Business Insider

Can Caddy do it?

• The Porsche Panamera Turbo carries a hefty price tag.
• The Cadillac CTS-V is essentially a Corvette Z06 with four doors.
• Can the awesome Caddy face down possible the greatest sedan on Earth?

The Porsche Panamera is an incredible car - so incredible that we named it Business Insider's 2017 Car of the Year.

The Panamera in Turbo trim is actually monumental: there's a stonking twin-turbocharged, 4.0-liter V8 under the hood, cranking out 550 horsepower. But behind that motor is a cabin of unparalleled luxury. For those who want it all, the Panamera Turbo doesn't disappoint. But it will cost you more than $150,000.

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That's a rich sticker, but for about half the price, you can get your hands on even more power. It won't be German power. It will be Detroit oomph. And it will have a Cadillac badge.

The CTS-V is probably my favorite high-performance four-door on planet Earth. If you like the Corvette Z06 and its 6.2-liter, 650-horsepower V8 widowmaker, the CTS-V has the same powerplant, just tuned down by ten horses to 640.

Let's call the comparison a showdown between perhaps the greatest sedan in existence and the extreme value proposition. Read on to see who wins: