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Audi says new 48 volt micro-hybrid system improves fuel economy, paves way for electrification

Most cars use a 12-volt system to power their electrical components. But, with more and more electric bits and bobs being added to new vehicles, a dozen volts is looking a bit weak these days. In fact, Audi says that standard 12-volt systems are being stretched "to their very limits." Enter 48 volts. If used in a car that gets 40 mpg, that would translate to around 43.5 mpg. Audi is testing a supplemental 48-volt electric system in two prototype vehicles – modified mild-hybrid versions of the A6 TDI and the RS 5 TDI – in order to add in more electric technology (an electric compressor, for example, to improve acceleration) and "convenience systems for dynamic chassis control." Audi says it has more applications in the pipeline, but the overall gist is that the German automaker sees 48 volts as an "important building block in electrification strategy." As you can see in the picture above (click to enlarge), the RS 5 TDI concept uses a li-ion battery installed in the back of the car and an alternator to provide 48 volts when the engine is off. Audi says that the 48-volt system can save up to 0.4 liters of fuel per 100 kilometers. To put that into US numbers, if used in a car that gets 40 miles per gallon today, that would translate into a bump up to around 43.5 mpg. The Advanced Lead Acid Battery Consortium (ALABC) is also working on a 48-volt system to improve fuel economy and we've got a deep dive of Audi's electric turbocharger here. Even more powerful and efficient – the new 48-volt technology from Audi Important building block in electrification strategy More voltage and more power for new technologies Scalable platform concept suitable for wide-ranging uses Ingolstadt, August 25, 2014 – Audi is to upgrade part of its vehicle electrical system from twelve to 48 volts. The move represents another technical building block for facilitating the integration of new automotive technologies while increasing the power and efficiency of its cars. "We are using the full bandwidth of electrification in our drive principles strategy. Running part of the vehicle electrical system at 48 volts plays a central role in this," commented Prof. Dr. Ulrich Hackenberg, Member of the Board of Management for Technical Development at Audi. "It enables us to make more energy available.

Volkswagen Group previews its wares on eve of Geneva show

The Volkswagen Group is comprised of 11 brands producing 240 vehicles across 49 factories throughout the world. So the best way to show off the range of the VW family is to cram a few thousand journalists and VIPs into a massive makeshift stand to outline the Group's goals, what's in the pipeline and what you'll be able to buy later this year.
To that end, VW pulled out all the stops on the eve of the 2012 Geneva Motor Show, bringing along 10 vehicles from across the range. We'll be delving into the details of each over the next two days of show coverage, but before that happens, you can read all about what we saw tonight from the cheap seats after the break.

The 2017 Acura NSX will cost $156,000

Back in October, when our Editor-in-Chief Mike Austin drove the 2017 Acura NSX for the first time in the Bay Area and at Sonoma Raceway, we guessed that the hybrid supercar would start at around the $170,000 price point. We weren't that far off – it starts at $156,000, and tops out around $205,000. But now that we have a solid sense of what Acura thinks this car is worth, and we know what they benchmarked the NSX against, we can compare apples to apples. Let's be clear: we like this car. Austin described it as "makes you giggle" fast, everyday-comfortable, and chock full of impressive party tricks like seamless shifting – with only a few foibles, like numb steering, to spoil the illusion of perfection. Back to the benchmarked cars. Acura says the NSX will compete with the Audi R8, and was developed to compete with the now-superseded 458 Italia. Let's start with the 2017 R8 V10 Plus – pricing hasn't been released, and a direct Euro-to-USD conversion isn't the whole story, but it starts at the equivalent of $179,000 in Europe. For that, the R8 V10 Plus provides 610 horsepower, a seven-speed DCT, and a 3.2-second sprint to 60 mph. The 458's successor, the 488 GTB, should be more expensive than the $243,000 the old model started at, and provides 661 hp, a seven-speed dual-clutch, and a 0-60 time of around three seconds (official numbers haven't been released for acceleration). For less money than either of these cars, the NSX delivers ... less. Total system output is 573 hp. It has a slight edge in gear count, at nine speeds, and should beat the R8 to 60 mph. But there's no V10, let alone Ferrari's feral turbocharged V8. It'll be up to buyers to determine if the compromises involved are worth a few thousand dollars in savings, if no options are selected. It should also be noted that Acura describes this as its first "built-to-order" vehicle, but the limited external color options and interior schemes don't appear to be much different than the extent to which you can customize an Accord. The configurator goes live on February 25th, if you want to see for yourself. Lastly, in what now seems to be a necessary part of a new high-end car launch, Acura will auction off VIN 001, the first production NSX, at Barrett-Jackson in January. All proceeds from that auction will benefit two charities: the Pediatric Brain Tumor Foundation and Camp Southern Ground. Related Video: Acura Shares Details of Next-Generation Acura NSX Sales Plan - 2017 Acura NSX U.S.