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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.

Weekly Recap: The divergent paths of Tesla and Fisker

There's no doubt that Tesla is downshifting while Fisker has been grinding its gears. But it wasn't always that way.
In the wake of Tesla's recent success, it's easy to forget that there were once two California electric carmakers with bright futures.

Audi UK in hot water over dealer safety claims

Car salesmen don't exactly have a reputation for being in the most truthful profession, and it appears that several Audi showrooms in the UK are playing into that stereotype. A BBC investigation found that multiple dealers told buyers that the company's models scored well in Euro NCAP crash tests. No big deal, right? The problem was that the vehicles were never actually evaluated.
The report began after an R8 buyer sent in a tip that his UK dealer claimed the sports car had received top Euro NCAP scores. However, it has never been tested by the organization. The BBC called 10 dealers inquiring about the A5 (pictured above), which also wasn't assessed. Nine said the coupe had been checked out, and six claimed it had a five-star rating - the best available.
Euro NCAP is funded by governments and motoring bodies, like the ADAC in Germany and the FIA. According to its website, the organization selects some of the most popular new models each year to crash test, and, the BBC claims, automakers can also pay to evaluate their cars. The last Audi tested was the A3 in 2012. The A6, Q3, A1, A4 and Q5 have also been tested since 2009, and they all received five-star ratings. However, the A5, A7, A8 and R8 have not been tested.