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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.

Fastest and most powerful SUVs in America for 2022

Here in the United States, we enjoy power almost as much as we like our SUVs. Thankfully, we’ve got plenty of both. Traditionally, the most powerful SUVs source their massive horsepower and torque from some form of a V8. While thatÂ’s still generally the case, electrification comes into play more and more, whether itÂ’s mild-hybrid tech, a plug-in hybrid powertrain or, as is the case with the two vehicles topping this list, fully electric vehicles. As we enter the 2022 model year, letÂ’s look at the most powerful SUVs available.  Before we dive in, letÂ’s address the elephant that is waiting just outside the door. Due to supply shortages, Mercedes-Benz is shelving most V8 models for the 2022 model year. Some 2021 models can still be found in dealer inventories, but we wonÂ’t include them. With that in mind, letÂ’s dive into the list. 2022 Audi RS Q8 — 591 hp / 190 mph Read our review of the Audi RS Q8 The only Audi on this list is a hot little number, which we characterized as “an uncompromising option in a field of compromised options.” Powered by a 4.0-liter twin-turbo V8 (which seems to be a popular format in this list), its 591 hp and 590 lb-ft of torque get it scootinÂ’ to 60 mph in just 3.7 seconds, and on to a top speed of 190 mph. It even has the bragging rights of holding the Nurburgring lap record for an SUV.   2022 Rolls-Royce Cullinan Black Badge — 592 hp / 155 mph (limited) Read our review of the Rolls-Royce Cullinan This is one SUV where being a passenger might be more exciting than sitting in the driverÂ’s seat, thanks to over-the-top luxury — what do you expect from a car that costs over $350,000? The driver doesnÂ’t go unrewarded, though, with a turbocharged 6.75-liter V12 at their disposal. Thanks to the Black BadgeÂ’s software upgrade, it makes 592 hp and 664 lb-ft of torque to help get to its electronically limited top speed of 155 mph that much quicker.    2022 BMW Alpina XB7 — 612 hp / 180 mph Read our review of the BMW Alpina XB7 Alpina takes already impressive BMW vehicles and turns them into even more powerful, more luxurious machines. The Alpina XB7 improves upon the BMW X7 with a biturbocharged 4.4-liter V8 offering up 612 hp and 590 lb-ft of torque. ThatÂ’s good for a 4.0-second 0-60 sprint and a 180-mph top speed. Alpina also adds its own transmission and drivetrain tuning, upgraded suspension, exhaust and a whole slew of unique appearance touches.

Leaked design sketch may preview Audi TT Sportback Concept for Paris

With the debut of the new TT and TTS hardtops in Geneva earlier this year, as well as the more recent debut of the convertible model, Audi has ticked the same body style boxes as the first two generations of TT. Unlike those earlier examples, though, the German luxury manufacturer has provided a slow and steady parade of concepts showing off possible directions for the TT.
First, we had the Allroad Shooting Brake Concept from the 2014 Detroit Auto Show. Then, in April, we saw the Offroad Concept, whose biggest differentiation from the Detroit concept was its extra pair of doors, making it appear, at least superficially, quite similar to one of Audi's Sportback models. This clear evolution from shooting brake to neo-Sportback might not have meant much, had the image you see above not leaked.
This is, allegedly, the third member of the larger TT-based concept family, and - surprise, surprise - it has massaged the profile of the Offroad Concept into something that, to our eyes, appears far more grounded in reality. It looks like a natural fit into Audi's line of four-door-coupe models, which are more fleshed out in Europe, thanks to the presence of the A5/S5 Sportback. Slotting in a TT-based model could represent a coup for Audi, as such a small four-door with such obvious sports car roots would be mostly unchallenged.