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Lotus Evija's wild aero setup is detailed by chief aerodynamicist

The Lotus Evija is a car of firsts for Lotus. To that end, the company has spent a lot of time talking over the details. Today, we get to learn about the wild shape’s aerodynamics and what Lotus engineers were trying to accomplish. Richard Hill, chief aerodynamicist for Lotus takes a dive into all the details, and the video at the top of this post offers a great visual. “Most cars have to punch a hole in the air, to get through using brute force, but the Evija is unique because of its porosity,” Hill says. “The car literally ‘breathesÂ’ the air. The front acts like a mouth; it ingests the air, sucks every kilogram of value from it – in this case, the downforce – then exhales it through that dramatic rear end.” We can see what Hill means as we look at the Evija in photos. Instead of a regular front bumper, this one has pass-throughs that direct the air back into the side of the car. Lotus hasnÂ’t released the all-important coefficient of drag figure yet, but we have to imagine itÂ’s very low. The front splitter (below, left) is responsible for a few different things. The opening in the center takes in air to cool the battery pack that is mounted behind the seats. Then, the outer section of the splitter channels the air to the “e-axle” for cooling of the electrical components. And finally, it also produces downforce.  There are a couple more tunnels for air to pass through in the rear. These “holes” are likely the most distinctive design feature, especially when accentuated with the LED taillights. Hill says that these are also fully functional and help to reduce drag. “They feed the wake rearward to help cut drag,” Hill says. “Think of it this way; without them the Evija would be like a parachute but with them itÂ’s a butterfly net, and they make the car unique in the hypercar world.” On top of all these porous body structures, there are pieces that move. The rear wing can elevate upward from its flush body position and deploy into clean air above, creating more downforce. And then thereÂ’s an F1-style drag reduction system. This uses a horizontal plane that deploys from the car to make it slipperier through air. The final big piece of this puzzle is the underbody sculpting that directs air into the massive rear diffuser. This causes an upwash of air, in turn creating a massive amount of downforce. Hill sums it up quite nicely.

Lotus bids farewell to the Elise and the Exige with Final Edition models

Lotus will put the Elise, the Exige, and the Evora out to pasture later in 2021 to make room for a new model that internally is being called Type 131. Before it embarks on this major lineup overhaul, the firm will send off the Elise and the Exige — two of its best-known and longest-running models — with a limited Final Edition. Fittingly, the Final Edition models represent the ultimate evolution of the Elise and the Exige, nameplates released 25 and 21 years ago, respectively. Lotus added power and, somewhat surprisingly, equipment without straying from the famous "light is right" philosophy that shaped both cars. Collectors have two variants of the Elise (Sport 240 and Cup 250) and three of the Exige (Sport 390, Sport 420, and Cup 430) to choose from. Stepping inside either Final Edition version of the Elise reveals a thin-film transistor (TFT) instrument cluster that can be configured with regular gauges or a racecar-like display, depending on whether motorists plan to hit the road or the track. Lotus also redesigned the steering wheel to give taller drivers more space. New upholstery and stitching patterns round out the major updates, and every Final Edition wears a specific metal plaque. Outside, the changes include new additions to the palette, including Azure Blue, which was one of the launch colors when the Elise was presented to the press in 1996. Racing Green, the hue worn by the model when it made its global debut at the 1995 edition of the Frankfurt auto show, makes a comeback as well. If 2,032 pounds is too heavy, Lotus offers optional parts (like carbon fiber panels) that shed 53 pounds. Power for the Elise still comes from a supercharged, 1.8-liter four-cylinder engine mounted directly behind the passenger compartment. It delivers 240 horsepower (23 more than stock) and 180 pound-feet of torque, figures that give the roadster a 4.1-second zero-to-60-mph time. Selecting the Cup model brings a full body kit that generates 145 pounds of downforce at 100 mph and 341 pounds at the Elise's 154-mph top speed. Like the Elise, the Exige range receives Final Edition-specific paint colors, decals, and other exterior accents. Inside, it's a similar story: Lotus added a TFT screen and a new steering wheel, among other updated parts. Instead of a four-cylinder, the Exige packs a meaner punch thanks to a supercharged, 3.5-liter V6 tuned to put 397 horsepower (a 47-horse increase) and 310 pound-feet of torque under the driver's right foot.

Lotus shows how drivers will be able to change the Evija's behavior

Lotus published footage of the Evija, its first series-produced electric car, undergoing shakedown testing on its Hethel, England, track. It also detailed the model's different driving modes, and the effect they'll have on the powertrain. Electric technology is heavy, and Lotus is known for making ultra-light cars, so engineers walked a fine line as they developed the Evija. Gavan Kershwa, the brand's director of vehicle attributes, explained his team managed to give the 2,000-horsepower coupe the handling enthusiasts expect from a mid-engined model by placing the lithium-ion battery pack, which is the heaviest part of the car, directly behind the passenger compartment. Matt Windle, the company's research and development boss, told Autoblog composite materials and clever packaging help offset the battery's weight. The part the steering column is mounted to is also used as a ducting for the climate control system, for example. All told, the Evija tips the scale at approximately 3,700 pounds. Enthusiasts will have five driving modes, named Range, City, Tour, Sport and Track, at their fingertips. Range mode caps the car's output at 1,000 horsepower and 590 pound-feet of torque and makes the Evija rear-wheel drive to maximize driving range. City makes the Evija easier to drive around town, while Tour lets the driver choose between rear- and all-wheel drive while raising the powertrain's output to 1,400 horsepower. Sport puts 1,700 horsepower and 1,254 pound-feet of torque under the driver's right foot, and it tweaks the various stability control systems to improve traction. Finally, Track unleashes the car's full potential while dialing in the highest level of torque vectoring. It also changes the chassis settings, according to the company. Lotus will continue fine-tuning the Evija in the coming months, and production is scheduled to start in 2021. Though it was delayed by the ongoing coronavirus pandemic. 130 units are planned, and Autoblog can confirm the first year of production is sold out — but there are still build slots available, contrary to what some sources are reporting. Looking ahead, Windle told us the Evija is a trailblazer whose design language and technology will permeate future models.  Related Video: Green Lotus Coupe Electric Performance