2008 Porsche Cayenne on 2040-cars

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911 beware! Porsche testing new top-trim Boxster

The Boxster and Cayman are like the scrappy siblings compared to their star brother – the Porsche 911. And now it looks like the rivalry is about to get even more serious, as our spies have captured this hotted-up Boxster doing some winter testing. We've already seen Porsche evaluating a higher-performance version of the Cayman, rumored to be called the GT4. It would reportedly offer a taste of the thrills of the 911 GT3, but at a lower price. The coupe appears to have a convertible twin in this Boxster prototype. The biggest giveaway of their possible relationship is the shared front bumper with larger intakes and an extra opening at the tip of the hood. Although, this one lacks the Cayman's big, rear spoiler in favor of a smaller decklid unit. The good news for fans of shifting for themselves is that this tester is fitted with a manual transmission, according to our spies. Being a prototype, though, there's no guarantee that the gearbox makes it to production. At least in Cayman trim, these higher performance models might use a tuned version of the 3.4-liter flat-six with between 370 and 400 horsepower. Though, an earlier rumor suggested that a turbocharged four-cylinder could sit behind the driver. Until we know for sure, glance at the gallery to see a Porsche that might try to challenge its big brother.

Former Top Gear crew starts filming for Amazon show

We might have only a hint at the name and no exact date for a premiere, but fans can celebrate that Jeremy Clarkson, Richard Hammond, and James May are filming once again. Plus, it looks like every cent of Amazon's reportedly lavish budget is being put on the screen. A photo tweeted by Clarkson shows the three hosts standing proudly in front of a Porsche 918 Spyder, Ferrari LaFerrari, and McLaren P1 at a racetrack. Clarkson jokes that the show has just a "skeleton crew" but behind him stand several dozen people, a sophisticated-looking camera rig, and two big trucks. This definitely looks worth the anticipation of the premiere on Amazon Prime next fall. Hammond tweeted the same picture and wrote: "The band is back together and it feels brilliant." This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Intriguingly, it appears that fellow British auto journalist Chris Harris is currently filming at the same track. He tweeted a photo to Clarkson of the McLaren doing a very smoky slide, while being followed by the other two hypercars. The Porsches in both photos wear the same red-and-white number 3 livery and have the same license plate number. In a later message, Harris was also clear that he wasn't filming there in connection with the trio's Amazon show. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

Porsche 911 GT3 RS getting all-new atmospheric engine

Porsche surprised many of its most puritanical enthusiasts when it took a decidedly more usable approach with the current 911 GT3. But when the new GT3 RS debuts, it promises to be a much more extreme departure. And a big part of that comes down to the engine. At the Detroit Auto Show this week, Auto Express spoke with Porsche R&D chief Wolfgang Hatz – who also happens to be head of engine and transmission development for the entire Volkswagen group. Hatz revealed that Porsche has developed a completely new engine for the GT3 RS, and while previous rumors suggested the RS would go turbo to fill in for the lack of a GT2 (and make the most out of its displacement), Hatz confirmed that it will be naturally aspirated. Considering that Porsche rarely goes downwards when it comes to 911 engine displacement, only upwards, we'd expect the new RS to pick up where the previous 4.0 left off. The new GT3 RS is also expected to pack a more extreme suspension, aero and stripped-out interior, but those hoping for an old-school approach may be disappointed to learn that the new RS will (at least at launch) only be available with the seven-speed dual-clutch transmission – though a manual version could follow if there's enough demand. In a related development, Hatz also hinted that the Cayman GT4 could debut at the Geneva Motor Show in March, with an even more extreme approach than the previous Cayman R. The new top-of-the-line Cayman is reportedly being developed to comply with GT4 class racing regulations but be fully homologated for road use. Related Video: