Mercedes-Benz Vision EQXX Concept First Drive: Sampling the Future
I did not win the efficiency contest here in Immendingen, Germany, home of the sprawling Test Center of Mercedes-Benz even though I had a handicap: the supremely slippery Mercedes-Benz Vision EQXX, a drivable concept car that can travel more than 1,200 km (745 miles) on a single charge.
The problem was not the car, it was me. I could not help busting out of the recommended conservative driving habits to gun it when the speed limits on the handling course allowed, which hurt my score, as did the need for manual braking when a speed limit was momentarily exceeded, prompting a warning. The benchmark was 7.9 miles per kWh; I recorded only 6.4 kWh of average consumption over the 10-mile course. On the plus side, after each burst of acceleration, I used the most aggressive of the four settings for regenerative braking and racked up more than three times the extra energy and range of the benchmark driver.
Which is to say, the beauty of the EQXX is that it can be fun, with a mighty torque pull, as well as efficient—I still recorded a single-digit consumption figure—so best of both worlds.
And that is good because this Vision concept is the future of Mercedes EVs. The learnings and stylings will show up in new vehicles coming in 2025 and beyond from the new Mercedes Modular Architecture or MMA. The EQXX is a street-legal prototype and the only one of its kind in the world. At 110.2 inches, it is a compact car, roughly the same wheelbase as the Mercedes-Benz EQB.
Its impressive range, beating the Lucid Air Grand Touring's 516 miles and the Tesla Model S Long Range at 405 miles per EPA, is attributable to a number of factors. The EQXX has a 100-kWH battery pack, similar to the one in the Mercedes-Benz EQS large sedan, but in the EQXX concept the unit is half the size and weighs 30 percent less, the cells are packaged differently and it has a carbon fiber top cover. The anodes use more silicon and hold more energy. While the rest of the Mercedes EV lineup have a 400-volt system, and some competitors have 800V, the EQXX system is more than 900V.
Stumbling onto the Teardrop Shape
The design team came up with the car's teardrop shape with the rear track two inches narrower than the front, a tapered cabin, and a long tail with an active diffuser which extends almost 8 inches. "We didn't set out to create this shape, we found it," Malte Sievers, project manager for the Vision EQXX tells us.
The result: a claimed drag coefficient of 0.17—more streamlined than a football—making the EQXX the most efficient model Mercedes, or perhaps anyone, has built. It could become a car for the ages as 0.17 will be hard to beat, physics is physics, says Sievers. And this slippery missile could never be built if it had to accommodate an internal combustion engine. "The whole thing falls apart," he says. "It shows the capability EVs brings to the industry."
Engineers say 62 percent of the EQXX's efficiency is from aerodynamics; meaning every change to aero affects everything else by 62 percent. You can make changes to rolling resistance, for example, but your efforts will never impact more than 20 percent of the total efficiency. And everything else amounts to an 18 percent impact. The team looked at every part to see if it was necessary and if so, how to make it light, efficient, and not heat up. The cooling plate underneath allows the car to be cooled by airflow and the overall efficiency means there is little to cool.
The summation of all the engineering efforts is a car where 95 percent of the energy sent from the battery makes its way to the wheels. For reference, the EQS sends 90 percent of its energy to the wheel well, which means the team had to make the EQXX twice as efficient.
First Outsiders to Drive the Mercedes-Benz EQXX
We were part of a media program that let non-Mercedes people drive the Vision EQXX for the first time. To date, only Mercedes employees have put it through its paces. That includes two road trips, the first April 5 from Singelfingen, Germany, to Cassis in northern Italy, 1,008 km (626 miles) and using 8.7 kWh/100 km or 7.1 miles per kWh, with 140 km (87 miles) left at the finish. The second run, June 21-22, was from Stuttgart to Silverstone in France, a distance of 1,202 km (747 miles) in summer heat requiring the air conditioning to run for 11 hours. Average consumption was 8.3 kWh/100 km or 7.5 miles/kWh, and it included 11 laps on the track when the car reached Silverstone to empty the remaining energy.
To work out the bugs, the team created a test mule by squeezing a 100-kW battery, DC/DC converter and DC charging controls, battery management system, other aspects of the EQXX powertrain, as well as testing equipment, into a Mercedes-Benz EQB. The mule is known as EMMA (the MMA for Mercedes Modular Architecture). EMMA made the Sindelfingen to Cassis trip first in a test run with its share of breakdowns, a learning curve that proved to be a total success as the EQXX did not have a single mishap in either of its long-distance tests.
We drove EMMA, who was a little clunky as the suspension was not adapted for the weighty equipment added or the fact that most of it bears down on the rear axle, throwing off the balance.
Then we hopped in the EQXX which was much quieter, balanced, nimble, and downright supple by comparison, riding on Ultralight 20-inch forged magnesium wheels with Bridgestone Turanza tires that are also lightweight and have ultra-low-rolling resistance. The car cornered nice and flat, the suspension was not challenged by the course, but neither did it stumble.
Impressive Regenerative Braking
Both cars have one-pedal driving with four degrees of regenerative braking—mild, two aggressive settings, and the option to have no reclamation at all, which works infinitely better on the EQXX. On one long straight in EMMA, we turned off regen and saw our speed drop about 9 mph within seconds. In the EQXX the speed never dropped at all.
Manual braking was harsher in EMMA, it was less grabby in the EQXX, but engineers wince if a foot ever touched that pedal because it means energy is being lost. We used the most aggressive regen setting for most of the EQXX drive; it was highly effective without being too harsh.
There is a satisfying weight to the EQXX's steering and the vehicle is not flighty at all. Input and response are nicely married. Acceleration on the 21-minute lap was not neck-snapping but the car picked up speed quicky and smoothly. It was easy to exceed the course's varying speed limits that were being closely monitored.
The big takeaway is that it felt like a production model more so than a concept.
Attempting the Impossible
The EQXX prototype was pulled together in 18 months, a project launched with a request in June 2020 from the board of management to build an electric vehicle capable of driving 1,000 km (621 miles) on a single charge. Almost all the teams involved worked to achieve the seemingly impossible target of 10 kWh/100 km, Sievers said. The car relied on expertise from Mercedes' Formula 1 and Formula E race engineering groups as well as the research department and production development team.
There are 117 heavy solar panels on the roof that send energy into a 12V system that powers many of the car's ancillaries which equates to a roughly 25-km (15-mile) bump in range. Engineers say the energy gains from the panels are greater than the losses due to the extra weight.
You cannot see out the glass of the back window; nor are there cameras for the rearview mirror—they would consume too much energy.
It all adds up to a highly efficient EQXX that exceeded the mandate.
Loving the Luxury Interior
The beautiful navy and white interior of the EQXX is serene and modern without looking too sci-fi or clinically cold, with sustainable vegan materials that look high end. There are 47.5 inches of curved OLED screen, perfect for using the real-time 3D navigation display—but only when absolutely necessary. The mini LEDs that backlight and dim the screen make for crackling crisp graphics. Dimming zones save power by not illuminating the parts of the screen not in use; there is zero energy consumption when the LEDs shut themselves off.
Mercedes provides eco guidance. The car knows the route conditions of the trip programmed into the nav system and tells the driver to speed up or slow down to be more efficient. The driver can look at data to show energy usage, solar energy produced, air pressure and wind direction, and forecast how much energy the trip will require. Almost ready for production is an Intelligent Avator to suggest movies to watch or restaurants to stop at, saving the driver from scrolling through menus on the screen and using energy.
They are tools I clearly need. Said the engineer who tried to keep a straight face as he analyzed the data spikes in my EQXX run: "I think you had fun." Then he confirmed Mercedes would not be hiring me anytime soon for their EV testing.
BASE PRICE Not for sale LAYOUT Front-engine, RWD, 2+2-pass, 4-door sedan ENGINE MOTOR DC DC induction, electric, 100-kWh battery TRANSMISSION 1-speed auto CURB WEIGHT 3,900 lb (mfr) WHEELBASE 110.2 in L x W x H 195.9 x 73.6 x 53.1 in 0-60 MPH EPA CITY/HWY/COMB FUEL ECON 250 mpg-e (est) EPA RANGE, COMB 747 miles ON SALE never Show AllYou may also like
The automotive industry is in a tight squeeze right now, wedged within the transition from internal-combustion engine (ICE) vehicles to battery-electric vehicles (BEVs) amid a global pandemic, a war in Europe, and supply constraints and rising material costs. Several BEV automakers including Tesla, Hummer, Lucid, and Rivian have raised their prices in recent weeks, and other automakers have delayed orders, limited buyer options, and in some cases, shipped vehicles without supply-limited components, with a promise to fulfill missing parts when supplies are available. And here is why it's not likely to change very soon.That's the outlook through 2024, according to a report from industry analyst AlixPartners. In particular, the report says semiconductor shortages will continue to negatively impact new vehicle production through the next couple of years, caused in part by the rising market share of BEVs planned to go on sale as the majority of the industry shifts away from internal combustion.BEVs will increase chip demand at a growth rate of 55 percent per year, according to the study, which will remain a key bottleneck in new vehicle production. That means that, as automakers introduce a lineup of new BEVs, the technical requirements of these new vehicles will increase the strain of supply because BEVs typically require more chips than ICE vehicles.That will likely force automakers to continue to hold back on production levels, meaning the number of cars on sale will probably remain limited for a few more years. This gives automakers more pricing power if demand for new cars remains high, so cars likely won't get any cheaper anytime soon.That doesn't necessarily mean automakers are making too much profit from higher pricing. As an example, via CNBC, Ford recently said the Mustang Mach-E has lost most of its profitability due to rising commodity costs.Pricing will continue to be negatively impacted by rising material costs, for both new BEVs and ICE vehicles. AlixPartners puts the raw material costs for ICE vehicles at $3,662 per vehicle, and BEVs materials cost more than twice that at $8,255 per vehicle since the battery and motor requirements require more raw materials.Those costs per vehicle are more than double what they were just two years ago, according to CNBC, reflecting the impact of the market constraints mentioned above.AlixPartners predicts that BEVs will only overtake ICE vehicles in the majority of market share way out in 2035, as suppliers and automakers likely scale back or slow down the recently rapid introduction of the resource-heavy, higher priced BEV models planned to be introduced, and customer interest and EV infrastructure need time to grow.AlixPartners says $48 billion in infrastructure investment is needed by 2030, but so far only $11 billion has been committed, so infrastructure support for BEVs will be catching up for years to come.
This entire issue is devoted to exploring the increasingly electrified and automated "inEVitable" future of mobility, looking 15 years or so into the down the road. Because that's kind of what this page always sets out to do, I'll spend this month's word budget on a highlight reel of sorts, describing a future world in which the best concepts explained in previous Technologue columns have successfully reached production to keep the world's inhabitants and goods moving sustainably.Note that separate online stories (scan the QR code on this page with your phone for more) dedicated to each of these headings will delve deeper into the present status and prognosis of these technologies, without rehashing any of the nitty-gritty science.Carbon-Free Combustion Forever!Combustion still powers certain vehicles, but running bio- or e-fuels, they emit no new carbon. Most that run on alcohols burn biobutanol, which nearly matches gasoline's energy content and octane rating (problems with low vapor pressure were resolved post-Biden). Most vehicles run on chemically equivalent gasolines assembled from smaller molecules. Nacero Blue and Green gas is built from methane sourced from natural gas that would have been flared and from landfill gases, while the rest comes from scrubbing CO2 from the atmosphere and combining it with cleanly electrolyzed hydrogen (see Prometheus fuels and Haru Oni/Porsche).How We Got to Cheap, Long-Range, Quick-Charging EVsEvery aspect of the EV was holistically reimagined, and vehicles with different missions look and drive differently. Integrating the battery into the structure with carbon electrodes and electrolyte resins makes sense in the smallest cars (and electric planes). Sports cars needing to rapidly store and release energy leverage both ultracapacitors and batteries. Lithium-sulfur chemistry has helped triple batteries' energy density, and solid-state batteries that can recharge in minutes are now a reality. The lowest-cost EVs use cheap reluctance motors, with torque smoothed by Dynamic Motor Drive tech. Retooling after Chipocalypse brought us better gallium-nitride chips that enabled faster charging, and building on manufacturing efficiencies pioneered by Lucid Motors helped further reduce cost. Finally, mining the Clarion-Clipperton Zone seabed for polymetallic nodules greatly eased supply-chain pressures for manganese, nickel, copper, and cobalt.Infrastructure Improvements for Better DrivingAll new EVs now support wireless "opportunity charging" when stopped at intersections (a rarity now that vehicles and infrastructure are all connected and smart), or even when driving on remote stretches of highway. Some of that electricity is now provided by smaller, more localized pebble-bed nuclear reactors running on thorium or another fuel as easily stored or disposed. Major roadways have all been mapped with ground-penetrating radar for another weatherproof means of precisely geo-locating autonomous vehicles, and most roadways are now made of low-CO2 concrete featuring silica fume particles or magnesium. Bridge supports use carbon-negative algal carbon-fiber panels sandwiching similar concrete that incorporates self-healing sodium-silicate capsules to greatly extend the bridge's useful life.Life on Board a FuturemobileIn-car connectivity took a huge step forward when fragmented aperture technology democratized satellite internet, and with so many passengers looking at a phone or tablet, airbags more safely deploy from the ceiling, forcing devices into our laps instead of our faces. Anti-odor chitosan seat fabrics and odor-canceling "white smell" dispensers please our noses. A transparent "braille screen" allows blind passengers to "see" the passing scenery, while sighted passengers amuse themselves by watching claytronic "solid holograms" enact miniature 3-D plays. Onboard sensors monitor our health and forecast injury statistics to first responders in the (increasingly unlikely) event of a crash. Alas, Nissan's proposed "thinking cap" electroencephylography system of controlling the car via brain waves is still on the drawing board.The Vehicle ItselfAs crashes become rare, designers gain some regulatory freedom, and designs once deemed aerodynamically problematic become feasible with low-pressure air nozzles that employ the Coandă effect to keep air attached to curved surfaces, reducing drag. Impossibly thin roof pillars inflate in a crash to increase their strength. Tires now feature rubber made from kudzu enzymes, self-healing 3-D-printed seasonal-design treads, and either self-inflating devices (since Goodyear and Coda settled their patent dispute) or airless tech like Michelin's Tweel. Spherical tires have reached production, but only for very low-speed delivery applications, so don't hold your breath for Audi's RSQ I, Robot movie concept. At least not yet.
We'll keep this brief, given how extensively we've covered the new 2023 Honda Civic Type R's gestation over the past two years or so. From watching it lap Suzuka to watching it lap the Nürburgring to, well, just watching the same camouflaged prototypes again and again and again, we have a good idea about the basic contours of the 11th-generation-Civic-based Type R. At long last, we now know when we'll see the rest of the hot hatchback's details—and, you know, its uncovered body: July 20.Just days after announcing that date, Honda's Japanese factory museum and showcase website (Honda Ayoma) included an image of the new Type R uncovered among its listed vehicles on display. The image was posted to the Civic11forum before it was pulled from Honda's site, and depicts a Championship White (our guess) 2023 Civic Type R in all its naked glory. Given what we've seen already—mainly those swirly-camouflage-covered Type R prototypes—the new R's look isn't all that surprising save for its relative conservatism. Unlike the last-gen car, which sported a riot of vents, slats, and other racy addenda on top of the already riotously styled regular Civic hatchback, this new one takes after the much cleaner 11th-gen Civic hatch and Civic Si sedan, both of which wear clean, understated looks. Of course, the Type R suitably amps up the regular Civic with a bulging hood and front fenders, a bigger lower intake, and that big ol' wing on the liftgate.Honda's official announcement had helpfully provided our until-now only peek at the 2023 Civic Type R without any camouflage on it. That darkened photo (we tried lightening it more, to no avail) is below.While full information surely will drop on the 20th—just over one week away—we'll give you some of what to expect from this updated monster: It'll likely continue to be front-wheel drive, and powered by a version of the same turbo 2.0-liter I-4 as the outgoing model. Look for more than 300 hp, a six-speed manual transmission, Brembo brakes, huge tires, a wild wing, and even snappier dynamics than the already sharp-handling last-gen version. Now, with that, let's hope there are no more teasers (or leaks) from here on out.
0 Comments