2004 Audi A4 on 2040-cars

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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.

Daily Driver: 2015 Audi S7

Daily Driver videos are micro-reviews of vehicles in the Autoblog press fleet, featuring impressions from the staffers that drive them every day. Today's Daily Driver features the 2015 Audi S7, reviewed by Seyth Miersma. You can watch the video above or read a transcript below. Watch more Autoblog videos at /videos. VIDEO TRANSCRIPT [00:00:00] Hi, all. This is Seyth with Autoblog. I'm here driving the 2015 Audi S7. I'm caught in a kind of annoying, normal, end-of-the-work-day suburban traffic right now, but even that helps to illustrate the point that I'm trying to make about the S7, is that it really is one of the best all-around grand touring cars that you can buy. A really, really good grand tourer has to do three things. [00:00:30] One, it has to look amazing. It has to feel really special inside and out. The second part is that it's got to be a great long-range cruiser. It needs to be powerful on the highway, be able to be very comfortable and quiet if you're taking it long distances, kind of like your typically Autobahn car. Three, and I think this is really difficult with the second one that I mentioned, I think that grand tourers have to be really great at driving like sports cars. [00:01:00] You're going along and you're touring on the highway and you know that a really great road is coming up. The car should be able to get off on that road and handle like something much lighter and still have that great cruising character. That's one of the reasons why I've always liked the entire Audi A7 line, but especially this S7 because the A7 itself in all of its guises is really a pretty great cruiser and a really practical all-around car with the space in the hatch [00:01:30] and reasonable room in the back seats. The S7 with the turbocharged 4.0-liter V8 making 420 horsepower and 406 pound-feet of torque really amps up the sportiness. Now don't get me wrong, the S7 is far from a sports car. It's not very light. It's got a long wheelbase. It is nimble, especially with Quattro, but it doesn't feel especially nimble. It doesn't want to change directions super quickly. It splits the difference between the two. That being said, [00:02:00] when you get up to some of your favorite roads, it doesn't disappointment you either because of all the power and grip and some pretty decent sporting character available. Of course one thing that you do lack in a big GT like this S7 vs.

Audi A9 Concept teased in video, new design chief tells us what to expect in LA

Audi has just dropped another teaser for the A9 Concept it'll be displaying at this month's LA Auto Show. This time around, instead of one static image, we get a tantalizing video of the showcar narrated by new Audi design chief Marc Lichte.
In terms of the A9, we get a better look at the body form than we've yet seen, and we also sneak a peek at its massive, blocky, turbine-style wheels that the conceptual flagship will wear in Los Angeles.
Lichte also takes this video opportunity as a chance to say how-do-you-do to the enthusiast community, commenting not only on his vision for the A9, but also offering up his bona fides in terms of family racing and art heritage. Get to know the man behind the car behind the sheet, here.