2007 Audi S4 Avant Wagon 4-door 4.2l 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.

XCAR shows how Audi engineers let loose with A1 Quattro

In its ultimate mortal guise, the Audi A1 Black Edition - the littlelest little guy Audi makes - costs 22,340 pounds ($33,705 US) in the UK and comes with a turbocharged 1.4-liter four-cylinder that outputs, at most, 182 horsepower and 184 pound-feet of torque. The Audi A1 Quattro - still employing the body of the littlelest little guy Audi makes - costs more than 41,020 pounds ($61,888 US) gets a turbocharged 2.0-liter four-cylinder from the Audi TTS with 252 hp and 258 lb-ft. And quattro. And 17-inch, center-locking, white wheels.
The crew at XCAR gets the A1 Quattro on video, to both question how the A1 Quattro happened and then to praise it even if they never found the answer. The hosannas come too late for anyone in the UK who was waffling about buying one, however, since all 19 meant for the 'sceptered isle are sold out. You can see what we missed out on in the video below.

Audi RS Q3 is funky, chunky, spunky forbidden fruit [w/videos]

After salivating over the Audi RS6 Avant last night, we're happy to see yet another RS-branded Audi here on the show floor at the Geneva Motor Show. Meet the RS Q3, Audi's first ever high-performance crossover, showing what's possible when the Ingolstadt automaker brings its best sporting bits to its smallest CUV.
Powering the RS Q3 is Audi's 2.5-liter turbocharged five-cylinder engine - the same one found in sweetie-darlings like the TT RS and RS3. Output is rated at 310 horsepower and 309 pound-feet of torque, sent to all four wheels via the automaker's seven-speed S-tronic dual-clutch transmission. Weighing in at just over 3,800 pounds, the RS Q3 is indeed a porky little pig, but no matter - that forced-induction fire will propel the small crossover to 62 miles per hour in five and a half seconds. And that's with launch control, too.
The RS Q3 certainly looks the part of a proper sporty Audi, with exaggerated air vents and bulgy, aggressive bits all around. Honestly, we like the way the RS package has translated to the Q3 form - this design really works well on the smaller CUV package. Inside, performance-minded fittings like a flat-bottomed steering wheel, upgraded gauges and sport seats bring the whole RS pack full circle. We'll admit, we're definitely intrigued by this little guy.