2004 Audi S4 Quattro 4.2l V8 on 2040-cars

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Audi moves to patent electric Quattro and active-shutter wheels

Audi might have a few tricks up its sleeve for the coming years, with the Brits at Autocar uncovering a pair of patent filings made by the German luxury brand. The first is something we've seen before - wheel flaps - while the second is an evolution of one of Audi's trademark technologies.
We last saw wheel flaps on the Ford Atlas Concept in 2013, but the futuristic fuel-saving tech has so far failed to arrive on a production car. Audi may be seeking to change that, patenting the flaps that open and close automagically based on airflow. They can also open if the brakes get too hot.
The second patent is an evolution of Audi's Quattro all-wheel drive. The new AWD system uses an electrically driven rear axle and wheel sensors to figure out when and at which corner the car might lose traction, and is targeted largely at hybrid offerings, which is a field Audi has only recently dipped its toe into.

To solve diesel problem, VW might need two fixes

Volkswagen says that a fix is on the way for its 11 million vehicles around the globe that are equipped with diesel engine software that can evade emissions tests. The problem might be far more complicated than simply creating a single solution for all of them, though. According to Automotive News citing Reuters, two remedies to cover different NOx-reducing systems could be necessary, and both potentially affect performance. Earlier examples of the EA 189 diesel engine used a lean NOx trap to reduce the harmful material coming from the tailpipe. According to experts in the Automotive News report, a software update might allow the engines to achieve compliance, but that could affect fuel economy. VW already tried this route once before the scandal came to light, but tests by the California Air Resources Board still showed the figures were too high. Later, some of the 2.0 TDI engines began using Selective Catalytic Reduction that reduced NOx by injecting a urea solution into the exhaust stream. According to Automotive News, a software update for this equipment might increase the amount of the substance used. Not only would that mean topping up the fluid more often, but there still could be some reduction in fuel economy. But, since the 2-liter, 4-cylinder TDI engine that sits inside the diesel vehicles first mentioned as being affected by the issue in the US don't have a urea treatment system, VW would need to install them into these cars. VW still hasn't officially outlined its solution (or solutions) to the emissions issue but is expected to soon. The automaker's long-term evasion of regulations with these diesel engines pumped vast quantities of additional NOx into the air. The substance is known to be linked with smog and acid rain. The US Department of Justice is already beginning an investigation into the company, and politicians are pushing for harsh punishments.

Both BMW and Audi shutter vehicle subscription programs

Both BMW and Audi are either cancelling or pausing their respective vehicle subscription programs, Automotive News reports. This is yet another blow to what was once a growing and burgeoning group of automakers introducing pay-as-you-go vehicle subscription options in a number of cities across the U.S. Both Mercedes-Benz and Ford shut down their services last year, and Cadillac turned off the tap in 2018. BMW’s program — Access by BMW — was only ever offered in the Nashville area. A BMW spokesperson explained the companyÂ’s decision making to Automotive News. "Our intent with the pilot was to learn about the viability of the subscription model and gauge customer interest. We are in the process of developing the next iteration of the program,” he said. When that next iteration will arrive is still uncertain. Audi doesnÂ’t claim that a comeback is on the way. Instead, the companyÂ’s website simply says its services are ending on January 31 this year. Audi limited its subscription service to the Texas area throughout its whole campaign. CadillacÂ’s subscription service was promised a reboot a long time ago, and today is the first time weÂ’ve heard some rumbling. ANÂ’s report claims that Cadillac is testing a rebooted version of the service in a dealer pilot now. WeÂ’ve reached out to Cadillac to see if it can provide any further details. As of today, the official Book by Cadillac website says Cadillac “will be debuting a new program in early 2020.” ItÂ’s now early 2021, so Cadillac is officially a year late on its announcement. A number of OEM-run vehicle subscription services still exist (Porsche, Volvo, Lexus, Nissan), but instead of the market expanding, itÂ’s shrinking these days. Related video: Audi BMW Cadillac Car Buying Ownership Luxury