Audi E-Tron’s Regenerative Braking System Defies Logic

Audi has detailed the advanced regenerative braking system of the upcoming E-Tron crossover. Prepare to have your mind blown.

According to the German manufacturer, the E-Tron’s electric powertrain works in such a way that in more than 90 per cent of all deceleration maneuvers don’t require touching the brake pedal. How?

The crossover features three different modes of energy recuperation that can add one kilometer (0.6 miles) or range for every kilometer traveled downhill. To do so, the two electric motors work alongside the electro-hydraulically integrated brake control system and the driver has three different modes at their disposal.

The first involves manual coasting recuperation using the shift paddles, the second involves automatic coasting recuperation via the predictive efficiency assist, and the third combines brake recuperation with the partial use of the traditional wheel brakes. This system contributes to up to 30 per cent of the SUV’s total range.

To show off this technology, Audi took a fleet of E-Tron’s to Pikes Peak and was able to travel down the mountain with barely any use of the wheel brakes. In fact, CNET reports that during the descent, the Audi engineer behind the wheel of its e-Tron only had to touch the brake pedal a few times. By the end of the descent, the recuperation system had added 6.8 kWh to the 95 kWh battery pack.

As the traditional brakes are required so rarely, Audi has been forced to develop a daily self-cleaning cycle for them to ensure that the steel discs don’t become rusty.

Over the Worldwide Harmonized Light Vehicle Test Procedure (WLTP), the Audi E-Tron has been rated at 248.5 miles (400 km).

The Audi E-Tron will be unveiled to the world at an event on September 17 in San Francisco.

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  • steve

    With the mainstream manufacturers revealing more and more good looking and technically advanced EVs – it’s understandable why Elon Musk is propping up Tesla share prices with cryptic tweets about taking his company private!

  • DanSemering

    Audi is going to go big in EV. Looking forward to what they do !

  • G82FS

    I barely need to use the brake in my Soul EV+ under normal conditions and it will regenerate multiple miles of range when going down big hills. Not sure why this is such news other than because it has the audi name attached to it?

    • Evan McMaster

      Its because the regenerative braking system contributes up to 30 percent of the vehicles total range. Your kia souls regenerative braking system does not contribute anywhere near 30 percent of your total range. That is why it is news.

      • Matthew Boyd

        Or I could have said what you did. Good response.

    • Matthew Boyd

      You have to read up on what type of accomplishment this is, it isn’t marketing jumbo. It’s 99.5 percent of a 1:1 use and recoup with braking recuperation. That’s astounding. think about that for a second. The heat regen-braking energy is almost being fully captured and used. No offense, but your foolish to think your car was capable of something like that. No car in the world has been reported of doing such a thing.

  • ▶️ ProtectOurHeritage ◀️

    No different from the BMW i3 or many other electric vehicles.

    • Matthew Boyd

      What are you talking about? Tell me what part of the i3 with it’s lower than advertised range and multitude of problems is even similar to this vehicle.

      • ▶️ ProtectOurHeritage ◀️

        Lower than advertised range? You believe mpg figures are accurate for every model out there? You think Tesla’s advertised range can believed too? Get real. Multitude of problems? Please do share….

        Have you driven the new Audi? How do you know it performs any better? Or are you happy to accept every word on a random website article?

  • Nuno Costa

    This is such a non story. There are EV’s that allow you to specify the maximum charge you want to do overnight. One of the reasons for this, is that if your house is on a hill, and your first journey is to go downhill, you’ll recharge the remaining while doing that journey. This is just marketing or just an incremental thing.

    • Matthew Boyd

      This “incremental” thing is better than it’s competitors systems. I think that warrant some attention. When I heard of the news, my first thought was how much was spent to engineer such a thing, and how long it took to achieve. Focusing on that waisted energy from heat generated by the brakes and what to do with it to improve efficiency can’t be an easy task. Audi is on the right track and not tackling the market to fit in, their tackling it to set benchmarks.

  • LeStori

    Hill… ? Where I grew up it was flat for several hundred miles all around.. Even now I have to go look for hills. The nearest one is 30 miles away.

    • Matthew Boyd

      That’s a joke right? There are even hills in Texas which is one of the flattest states in the country, and all over Florida which a lot of the land at least in central Florida is at sea level or just above it. You drive hills daily you just don’t think about it. Drive on a highway, rural suburban roads, your going up and down hills all the time. Obviously the test is to the extreme at Pikes Peak, but you don’t have to go looking for hills. Walk outside your house and down the street. I’m sure it’s an incline or decline there. Grab a tennis ball or basketball place it one the ground to test it out.

  • COOL.

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