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Mercedes-Benz unveils its revamped G-Class

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The all-new G-Class makes its public debut at the Detroit auto show in G550 form. Completely redeveloped and fitted with a 4.0-liter V8 biturbo gasoline engine offering 427ps and 450 lb-ft of torque at 2,000rpm to 4,750rpm, despite near-identical looks to its predecessor plenty has changed for the Mercedes-Benz SUV.


Ford’s F150 pickup gets its first diesel motor

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Developed by the powertrain team behind the 6.7-liter Power Stroke engine for super duty trucks, the all-new 3.0-liter V6 Power Stroke unit promises 250ps, 440 lb-ft of torque, and an anticipated 5175kg of towing capacity.


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In light of Fisker's solid-state battery breakthrough and claims of a one minute charge time, will this electric vehicle technology development kick-start mass BEV uptake? 

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Cayman R makes LA debut

Porsche has taken the covers off a lightweight edition of its mid-engined Cayman coupe.

Making its first public appearance at the LA Motor Show this week, the Cayman R is 55kg lighter than the equivalent Cayman S model and is more powerful, with the flat six-cylinder being tuned to deliver 330bhp.

Porsche says that the Cayman R has been designed to trace back the German OEM’s lineage to the famous mid-engined 904 coupes of the 1960s. The newest member of the mid-engined Cayman family features the acclaimed 3.4-liter, flat six-cylinder DFI boxer engine found in the Cayman S, but it has been tweaked to produce an additional 10 hp. With a six-speed manual transmission, the Cayman R sprints from a stand-still to 62mph in 5 seconds, which in the real world is two-tenths of a second faster than the Cayman S. With the optional seven-speed PDK (Doppelkupplungsgetriebe) transmission and the Sport Chrono package, the sprint exercise is reduced to 4.7 seconds. Top speed with the manual transmission is up by 3mph to 175mph; with the PDK that figure peaks at 174mph.

With an unladen weight of 1290kg, Porsche engineers were able to achieve a power-to-weight ratio of 255bhp per tonne, and 250bhp per tonne with the PDK.

The greatest saving of weight comes from the use of lightweight components and stripping back equipment levels to those associated with driving performance. In addition to the removal of the air conditioning and stereo, the driver-focused Cayman R utilizes a unique, slightly smaller 54-liter fuel tank and a sports suspension system that lowers the Cayman R by 20mm, helping lower the centre of gravity.

The Cayman R also comes as standard with a limited slip differential to optimise cornering grip, and lightweight 19” alloy wheels (first seen on the Boxster Spyder) that reduce weight by 5kg. Lightweight aluminium door skins from the 911 Turbo and GT3, carbon fiber sports bucket seats and the distinctive interior door panels from the 911 GT3 RS also contribute to the weight reduction.
 

17 November 2010


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