2013 Audi A6 3.0t Quattro Premium Plus With Navigation on 2040-cars

Auto blog

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.

2015 Audi TT picks up the style, pace with Xcar

With the original TT, Audi arguably valued style over substance. The equation reversed - at least to an extent - with the second-generation model. But with this latest MkIII version, the German automaker appears to have finally imbued its compact sports car with the performance to back up its runway looks.
That is, at least, what the team at Xcar has to say, having driven the latest Audi sports coupe on the rainy roads of Scotland - taking in its crisp lines, sharp handling, nippy performance and impressive technology along the way. But don't let us spoil it for you: Watch for yourself to see how the new TT measures up against its stylish forebears.

The hot hatch without a hatch | 2017 Audi S3 First Drive

The 2017 Audi S3 is a car without equal. That might end up on a billboard, but it's actually meant quite literally, as in the S3 has no direct competitor. Other compact luxury sedans, of which there are few, can't match its performance. The BMW 2 Series has two doors, plus it's rear-drive. The bonkers Mercedes-AMG CLA45 is on another power and price planet altogether. The mechanically related VW Golf R isn't a luxury car and has a hatch instead of a trunk. And so the S3 exists as an oddity. But it's a fun oddity, and a well-made one too. For 2017, it receives a number of noteworthy changes to keep it fresh and technologically relevant. Most also apply to the 2017 Audi A3, the car on which it's based, which itself gets a new 2.0-liter turbo four base engine in place of the old 1.8-liter. Paired with front-wheel drive and essentially a variation of the Quattro model's carry-over 2.0-liter, it produces 186 horsepower (up from 170) and returns 29 mpg combined (up from 27). That revamped A3 wasn't on hand for the press drive in Durham, North Carolina, so we were not-at-all stuck with the 2017 S3. Its own 2.0-liter turbo four is unchanged, still pumping out 292 hp and 280 pound-feet of torque through a six-speed DSG dual-clutch automatic transmission. Audi says it'll hit 60 mph in 4.7 seconds, which is a full second quicker than the 220-hp A3 Quattro as well as about a half-second quicker than the Audi A4 Quattro. That bonkers CLA45 is around the four-second mark. Indeed, having so much power in such a small sedan is a novel and grin-inducing experience. The throttle response is sharp enough in standard mode, but tap the dash-mounted Audi Drive Select toggle to choose Dynamic, and it comes even more alive, eagerly shooting the S3 forward with the merest hint of a toe wiggle. The DSG is also quite happy to downshift when called upon, either by said toe or by itself when under braking. Blipping down two gears when heading into a corner is commonplace here, as are the sharp little barks that emanate from the S3's quad exhaust tips. And then there's the S3's Quattro all-wheel drive, which has been updated for 2017 with the same performance-oriented system found in the TT and TTS. Although its front/rear torque split is constantly changing based on current traction conditions, it nevertheless skews towards a rear torque bias to the point that, when in Dynamic mode, it won't reduce power in oversteer situations.