Autoblog

Porsche, like every other automaker under the sun, is under pressure to produce vehicles with improved fuel efficiency that emits less CO2. The current 911 puts out 225 g/km of CO2, but Porsche believes that it can hack another 10 g/km off that figure with the implementation of start-stop technology on its flat-six engines. Not so fast, say Porschephiles. According to the automaker, buyers aren't fond of such a feature on their arse-engined performance machines. Porsche didn't cite the reasons behind consumer's reluctance, but a 10 g/km reduction doesn't seem like much in the overall product scheme of Porsche.

During the launch of the 2009 911, CAR asked Porsche engineers what the CO2 limitations are of the current flat-six, and according to Thomas Wasserback, "it might be possible to produce a Boxster that emits 180 g/km, it would be difficult to engineer a 911 to produce 200." However, Porsche intents to maintain current performance levels, despite a possible reduction in engine output, by lessening equipment levels and making use of more lightweight materials and body shells. Interestingly, Porsche estimates that the new 911s equipped with the seven-speed PDK transmission, which increases fuel economy and decreases emissions, will account for 80-percent of all 2009 911s sold and could spell the end of the stick shift within five years. However, manual transmissions will remain standard on Porsche's 911 Turbo, GT2 and RS models due to the torque limitations of the PDK gearbox, but a stronger version of the 'box is in development, so expect to see dual-clutch technology on all those models in the coming years.


[Source: CAR]

It seems like every carmaker has set themselves the goal of world domination. Toyota's internal master-plan memos leaked out, and then there's BMW nipping right along with lofty goals, too. Here comes Audi, deciding that they'd really like to sell 200,000 vehicles in the US market by 2010. While BMW is the current premium brand champ, Audi thinks it's got the moxie to claim that spot. Audi's perhaps got a case of inflated self-esteem if they think they're going to come out on top, especially considering that competitors are also projecting gains. Taken together, automakers have set out goals for growth that are more ambitious than what the market's likely to do.

Nobody will argue that Audi makes high-performing cars packed with high levels of technology and class-leading appointments. When the conversation takes on a green tinge, however, Ingolstadt seemingly falls short. Audis have been packing on the muscle and the weight, while BMW's been at work discovering ways to decrease carbon emissions and innovate in the name of fuel efficiency. Audi fires back, citing their fleet's CO2 emissions which are lower than Mercedes or BMW, with more tech to come. Tweaked engines, hybrid and alternative-fuel powertrains, and fuel-saving techniques like stop/start and brake regeneration are all coming to the Audi range soon. In the race for the top, someone will inevitably end up on the bottom. Audi just hopes that they can claw up that slope, Quattro-like.

[Source: Auto News - sub req]