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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.

Lexus gets top brand marks from Consumer Reports; Ford, Jeep hit hard

Consumer Reports has released its 2014 Car Brand Report Cards, with Lexus again reigning at the top and doing so with the same industry-topping score of 79 that it registered in last year's Report Cards. This year, the institute credited its lineup for being "usually quiet, comfortable, and fuel-efficient," noting it's the only brand on the list "to achieve an excellent average overall reliability score." The Car Brand Report Cars list is meant to rank the best all-around vehicles based on CR testing and reliability results tallied by subscribers it surveyed. Each brand included must have sufficient test and reliability data for at least three models, a standard which left out 11 marques including Fiat, Jaguar, Land Rover and Porsche.
This 2014 Brand Report Cars edition is the first of a new format in which sub-brands have been broken out from their parent brands, with Acura using this year to move up the leaderboard into second place with a score of 75 for its "reliable, well-finished and somewhat sporty models." The top three was rounded out by Audi, climbing from eighth to third by scoring a 74 for "well-crafted interiors, nice handling and good gas mileage." Audi scored highest in the road-test portion, its improved reliability aiding its rise. The top nine was completed by Subaru, Toyota, Mazda, Honda, Infiniti and Mercedes-Benz.
Ford and Jeep weighed in at the other end of the rankings, Jeep taking the lowest overall score in the road tests and hampered by "a mix of spotty reliability." Ford was sunk by reliability issues with its MyFord Touch infotainment system which consumers found troublesome enough to negate its cars earning "solid test scores" for being "very nice to drive." Perhaps the rumored switch from Microsoft to Blackberry's QNX for the next generation SYNC will help them out. Cadillac's score also took a hit for infotainment reasons after it was the leading US brand last year, the CUE system in the XTS dragging Cadillac to the bottom of all General Motors brands.

Poor headlights cause 40 cars to miss IIHS Top Safety Pick rating

Over the past few months, we've noticed a number of cars and SUVs that have come incredibly close to earning one of the IIHS's highest accolades, the Top Safety Pick rating. They have great crash test scores and solid automatic emergency braking and forward collision warning systems. What trips them up is headlights. That got us wondering, how many vehicles are there that are coming up short because they don't have headlights that meet the organization's criteria for an "Acceptable" or "Good" rating. This is a revision made after 2017, a year in which headlights weren't factored in for this specific award. This is also why why some vehicles, such as the Ford F-150, might have had the award last year, but have lost it for this year. We reached out to someone at IIHS to find out. He responded with the following car models. Depending on how you count, a whopping 40 models crash well enough to receive the rating, but don't get it because their headlights are either "Poor" or "Marginal." We say depending on how you count because the IIHS actual counts truck body styles differently, and the Infiniti Q70 is a special case. Apparently the version of the Q70 that has good headlights doesn't have adequate forward collision prevention technology. And the one that has good forward collision tech doesn't have good enough headlights. We've provided the entire list of vehicles below in alphabetical order. Interestingly, it seems the Volkswagen Group is having the most difficulty providing good headlights with its otherwise safe cars. It had the most models on the list at 9 split between Audi and Volkswagen. GM is next in line with 7 models. It is worth noting again that though these vehicles have subpar headlights and don't quite earn Top Safety Pick awards, that doesn't mean they're unsafe. They all score well enough in crash testing and forward collision prevention that they would get the coveted award if the lights were better.