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Mercedes-AMG to phase out 5.5-liter V8 after next year [UPDATE]

UPDATE: A previous version of this story indicated that AMG's 6.0-liter twin-turbo V12 was still mated to a five-speed automatic transmission, however the latest models (including the S65 AMG sedan and coupe, SL65 roadster and G65 sport-ute are equipped with the newer seven-speed unit. Mercedes also reached out to point out that the 5.5-liter engine will be phased out gradually, not overnight. There's a lot to love about AMG's 5.5-liter twin-turbo V8. It produces as much as 577 horsepower and 590 pound-feet of torque, and delivers blistering performance to even the heaviest of vehicles. But try not to get too attached, because like its 6.2-liter, naturally aspirated predecessor, it's not long for this world. The latest word comes from Autocar, which reports that Mercedes will release the last applications for the 5.5 biturbo within these next two calendar years in the new GLE63 AMG and upcoming S63 AMG convertible. After that, even though it was only introduced in 2011, it will be phased out. Fortunately Affalterbach has a worthwhile successor already in place in the 4.0-liter twin-turbo V8 from the Mercedes-AMG GT. The smaller powerplant, already in store for the new C63, is already producing 503 hp and 479 lb-ft in S spec. That's still shy of the larger unit's output, but where the 5.5 is nearing the end of its production cycle, the 4.0 is just starting out. Of course the 4.0-liter biturbo isn't the only engine AMG is making these days. Smaller models (based on the front-drive platform) employ the 45-designation, high-output 2.0-liter turbo four. Models at the very top of the lineup, however, use a 6.0-liter twin-turbo V12 that may be a dinosaur, but with 621 hp and 738 lb-ft of torque on tap, still can't be beat.

Carlsson turns Mercedes-Benz SLK into 610-HP hill-climb clawer

Carlsson's race-tuned versions of the Mercedes-Benz SLK have been taking checkered flags for years, and we won't be surprised if its SLK 340 hill climber fares any different. Developed by multiple German and Swiss hill climb champion Reto Meisel, the carbon-bodied SLK 340 with lightweight brakes and a closed underbody weighs 1,716 pounds. Propelling that tiny bit of weight is a 3.4-liter V8 from Judd with 610 horsepower, and it rolls on 18-inch wheels shod in Avon tires.
It will debut at the Geneva Motor Show before beginning its racing campaigns in the summer. This one won't just tear up roads in Europe, though - Meisel says he plans on bringing it to the Pikes Peak International Hill Climb. The press release below has more details.

Aston Martin and Mercedes-AMG bicycles: Luxury branding has no bounds

Luxury automobile companies are never quite satisfied with building high-end cars. They often stray into other types of branded merchandise that can have little to do with cars, such as the BMW Active line of clothing and accessories. Splitting the difference between branded merchandise and actual vehicles are these two limited-production bicycles from Mercedes and Aston Martin. The bike above is a collaboration between Mercedes-AMG and German bicycle brand Rotwild, a builder that has been around since 1996, according to the company's website. The bicycle in question is the R.S2 "Beast of the Green Hell." It's inspired by the Mercedes-AMG GT R sports car that was promoted with the same nickname. It uses a carbon frame and wheels, as well as disc brakes. It's also painted in green and black to match the Green Hell Magno color available on the GT R. Only 50 of them will be built, and each will carry a pricetag of over ˆ7,000, or nearly $8,300 at current exchange rates, including tax. View 4 Photos The second bicycle is from Aston Martin and another German bicycle company, this one called Storck Bicycles. This bike company has also only been around since 1995. The bike is called the Fascenario.3 Aston Martin Edition, and it will be a bit less rare than the Mercedes bicycle, with 107 total units. It's still a cool vehicle, though, featuring a carbon frame and wireless shifters. In total it weighs 13 pounds. It does lack the disc brakes of the Mercedes bicycle, though. Pricing hasn't been announced for the Aston Martin bike, but don't expect it to be cheap. Related Video: Featured Gallery ROTWILD R.S2 Limited Edition Mercedes-AMG GT R bicycle View 9 Photos Image Credit: Mercedes-Benz, Aston Martin Green Weird Car News Aston Martin Mercedes-Benz Performance mercedes-amg