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Mercedes-AMG GT3 opts for big displacement without a turbo

There was a time when there were numerous categories in sports car racing: GT1, GT2 , GT3... but these days they've all been amalgamated into the latter. That's left a GT3 class packed with competitors and possibly more contentious than ever before. What you see here is Mercedes' new challenger, in official form after being leaked earlier today by the French website Le Point. Replacing the SLS AMG GT3 that won its class (among other races) the Nurburgring 24 Hours in 2013 is the new Mercedes-AMG GT3. Set to be revealed at the Geneva Motor Show, it's the racing version of the new Mercedes-AMG GT, and aside from looking the business, it has the makings of a highly competitive entry. As you can see, it sits closer to the track surface than the road-going version, and packs more extreme aero – including a front splitter you could serve dinner off of, little winglets to deflect the air away from the front tires, deep side sills, a massive rear wing and (though we can't see it presently) what promises to be a very large rear diffuser. It's also got more ventilation to feed the engine and cool the brakes, and a stripped-out cabin with full roll cage and a steering device that's long since evolved beyond resembling an actual "wheel." To save weight, Mercedes has redone many of the panels out of carbon fiber, but one of the most intriguing elements is what you'd find under that woven hood: instead of adapting the 4.0-liter twin-turbo V8 from the road-going GT, AMG has slotted in the larger atmospheric 6.3-liter V8 from the outgoing racer – coupled to a six-speed sequential gearbox. With its new GT3 entry, Mercedes surely hopes to take a slice of the customer racing market that Porsche in particular has developed into a successful and profitable business over the years. Racing fans, however, will be more interested to see how this puppy fares at Le Mans, the Nurburgring, the Blancpain sprint and endurance series, the United SportsCar Championship, the FIA World Endurance Championship and countless national series around the world. It'll have tough competition on its hands, though, from the likes of the Porsche 911 RSR, Audi R8 LMS, Bentley Continental GT3, Ferrari 458 Italia GT3, McLaren 650S GT3, Lamborghini Huracan GT3 and countless others that battle for glory on a racetrack somewhere on any given Sunday. World premiere in Geneva for spectacular AMG racing car All-out attack : the new Mercedes-AMG GT3 Affalterbach.

Mercedes updates G-Class including new 4.0-liter twin-turbo V8 [UPDATE]

UPDATE: Information on US availability (including corrected output figures) added to the revised text below. Mercedes has been building (or having Magna Steyr build) the G-Class for an unfathomable 36 years now. Needless to say, the legendary off-roader wouldn't still be around if not for the occasional update here and there, and that's just what the German automaker announced today. The list of enhancements to the iconic Gelandewagen is almost as long as its lifespan, but the most salient point here is the introduction of a new engine. The revised G550 introduces a new 4.0-liter twin-turbo V8, based on the high-performance engine in the Mercedes-AMG GT and C63, but retuned: in this application, it produces 416 horsepower and 450 pound-feet of torque (compared to 453 hp and 440 lb-ft in the GT or 503 and 480 in the GT S). We'd expect that engine to gradually make its way into other models as well. Though the G500 is the only one with a completely new unit, the other engines in the lineup have also been updated. The G350d bumps from 211 hp and 398 lb-ft to 245 hp and 442 lb-ft, the AMG G63 jumps from 536 hp to 563 (torque remains constant at 560 lb-ft), and the top-of-the-line, twelve-cylinder G65 (which we'll be getting Stateside for the first time) now produces 621 hp and a massive 738 lb-ft. Those figures result in a 0-62 time of 8.9 seconds for the diesel, 5.9 for the G500, 5.4 for the G63 and 5.3 for the G65 – which are altogether might impressive for a vehicle as big and boxy as the G-Wagen. All but the G65 now feature stop/start systems to help reduce fuel consumption too. Benz also revised the suspension tuning (while offering optional active dampers) and reprogrammed the ESP, ASR and ABS systems. Inside there's a new instrument cluster, the non-AMG models get new bumpers and flared wheel arches, and there's a bright new array of colors available for the AMG models, which can also be ordered in a new special Edition 463 featuring unique trim inside and out. The revised models will be arriving at US dealers in November, however the diesel model will not be making the transatlantic journey to our shores. The data in the press release below (as well as the images in the gallery above) pertain to the European models, with the correct output figures for the US models amended in the text above. Related Video: Mercedes-Benz G-Class Makeover for an off-road icon Stuttgart.

Jay Leno tells the story of his Mercedes Gullwing

With all the new and varied machinery stopping by Jay Leno's Garage on a regular basis, it would be all too easy to forget that the former talk show host has one of the largest and most enviable private collections of automobiles in the world. Leno has hundreds of vehicles at his disposal, but the real value of it all is at least as much about quality as it is quantity. Take this gem, for example. Sure, it's a little worse for wear, but it's got a nice patina to it – and it's a work in progress. One look is all it takes to know exactly what it is: a classic Mercedes-Benz 300SL, complete with Gullwing doors. "The McLaren F1 of its day," Jay calls it, and with good reason. Watch the video above to hear the story of the Gullwing he rescued from the desert and is slowly bringing back to life. Related Video: