AutoWeek apparently has it on good authority that Porsche has plans for a diesel engine not just for its Cayenne Sport Utility, but also for its upcoming sedan, the Panamera. The Panamera will assuredly be getting a gasoline engine, perhaps mirroring the Cayenne’s V6 and V8 options, and will also be equipped with an optional hybrid drivetrain which will likely feature the direct-injected 3.6 liter V6 engine. Porsche had been hesitant to offer an oil-burner in its range of sportscars, but perhaps the sedan would benefit from the increased fuel mileage a diesel engine would offer.

We don’t know what diesel engine is slated for the Panamera, but the Cayenne will be getting a 3.0 liter turbo diesel V6 engine from Audi, so that seems a distinct possibility for the sedan as well. Porsche could also choose an Audi diesel V8 engine or even the Volkswagen diesel V10 or 6.0-liter Audi diesel V12 if they fit underhood. Also spinning in the rumormill are Focus-like fender vents and a targa top.

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Over the last year or so, Porsche has been grabbing chunks of Volkswagen, slowly but surely. It is clear what the German manufacturer of luxurious sportscars is attempting: a takeover of VW, which is the largest automaker in Germany. There are still laws and regulations standing it its way, but Porsche may have the backing of the European Union, which could have the power to change laws currently protecting Volkswagen from a takeover. It has long been assumed that Porsche’s plan was to lump its products along with the more fuel efficient models from VW, which could allow the company to avoid paying large fines for not meeting carbon output regulations.

As it stands right now, Porsche seemingly has no choice but to offer more fuel efficient and lower emission models. To that end, it has announced hybrid versions of its Cayenne and upcoming Panamera sedan. Also possible is a diesel engine for its utility vehicle. By gobbling up Volkswagen, Porsche could dial back on these fuel-saving models and get back to its high performance ways without fear of excessive penalties.

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