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German prosecutors raid VW, Audi offices

As Volkswagen continues to try to put its diesel emissions scandal behind it, the company has had mixed success. It has agreed to pay penalties and fix or buy back affected vehicles in the US, and has made a strong push to evolve into a greener, mobility-focused company. The scandal just won't die, though, and has, in fact, just escalated. Prosecutors have searched Volkswagen's Wolfsburg, Germany, headquarters, as well as Audi offices in Ingolstadt and Neckarsulm and even the homes of some Audi executives, Reuters reports. The raids, which coincided with Audi's annual earnings press conference, are related to 80,000 diesel vehicles with possible emissions cheat devices sold in the US between 2009 and 2015. European vehicles aren't part of this particular investigation. "With these search orders, we aim to clarify in particular who was involved in deploying the technology concerned and in the provision of false information to third parties," the Munich prosecutor's office says. Audi CEO Rupert Stadler, who says his residence had not been one of those searched, says he is supporting the ongoing investigation, admitting that the company has a long way to go to recover from the scandal. The Dieselgate scandal, as it has come to be known, broke in September 2015. Related Video:

Favorite vehicles of 2017

The Autoblog staff has driven a lot of vehicles in 2017. This video showcases our favorite vehicles from this year, along with some thoughts on why they made the list. Wanna read more head over to https://www.autoblog.com/photos/best-drivers-cars-2017/ Aston Martin Audi Ford Jeep Lexus Porsche Autoblog Minute Videos Original Video porsche macan lexus lc 500 macan wrangler r8 Arts and Entertainment

Audi is working on a suspension that gets power from bumpy roads

Regenerative brakes aren't new. They're on virtually every hybrid and EV, and they're even starting to pop up on traditional gas-powered cars, like with the i-ELOOP-equipped Mazda6. But even with these systems, cars can get more efficient, and Audi thinks it found yet another source of wasted energy. The source? The suspension. The idea is to turn the kinetic energy that goes into the dampers into usable energy instead of as waste heat. Audi isn't the first auto company to come up with regenerative suspension – nearly three years ago, ZF introduced its GenShock technology, which used a valve attached to traditional, oil-filled hydraulic shocks to recapture kinetic energy from movement caused by bumps in the road. Audi's prototype technology, which it calls eROT, replaces traditional dampers with horizontally oriented electromechanical rotary dampers. eROT is apparently short for electromechanical rotary damper. Neat. In testing, eROT recovered an average of 100 to 150 watts on a typical German road, three watts from a fresh piece of pavement, and 613 watts on a rough stretch of tarmac (wattage is calculated as power over time, so this is actually the rate at which the system harvests energy). The dampers channel that energy to a tiny, 0.5-kWh, 48-volt battery. The prototype is claimed to cut CO2 emissions by three grams per kilometer (4.8 grams per mile), while the company believes a future production version could save up to 0.7 liters of fuel per 100 kilometers of driving. Converting the savings to American miles per gallon isn't easy, so we'll use a practical example. In the US, the Q7's supercharged 3.0-liter V6 returns a combined rating of 21 miles per gallon, which works out to 11.2 liters per 100 kilometers. Apply eROT's 0.7L/100km savings, and the Q7's economy would improve to 10.5L/100km, or 22.4 mpg, a 1.4-mpg improvement. That's not huge, but because math, 0.7L/100km is more dramatic on a more fuel efficient vehicle – taking an A3's 27-mpg combined rating and adding eROT would drive efficiency up 2.4 mpg, for example. There are a few other big benefits beyond fuel and emissions savings – Audi claims eROT provides a more comfortable ride than traditional active suspensions, because engineers can tune the compression and rebound strokes independently of each other. Beyond that, the horizontally oriented rear suspension geometry means more cargo space, since the dampers don't poke up into the cabin like they normally do.