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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 Emira GT4 car revealed, ready for the race circuit

It’s time for the Lotus Emira to go racing. YouÂ’re looking at the first photos of the Emira GT4 race car here, which is the competition spec version of the Emira road car we got to see revealed at this yearÂ’s Goodwood Festival of Speed. Lotus didnÂ’t provide a ton of details, but we know the important stuff. Its body is made of composite, and a bunch of changes are made in the name of aerodynamics and downforce. The clean and simple lines of the Emira are interrupted by items like the large front splitter and huge rear wing. By and large, though, the basic Emira design and structure remain the same outside. WeÂ’ll also note that the GT4 is hand-built, whereas Lotus is attempting to bring more automation to the road carÂ’s assembly. The engine used in the GT4 is the tried-and-true Toyota-sourced 3.5-liter V6 (not the new AMG four-cylinder). Per usual, itÂ’s fitted with a supercharger, and Lotus says itÂ’s good for up to 400 horsepower with a 7,200 rpm redline. You get a six-speed xTrac sequential transmission (the only transmission option), and the car is fitted with a limited-slip differential. Braking is handled by race-spec Alcon discs and calipers, and Ohlins coilovers keep the body in check. In all, Lotus says the dry weight is 2,778 pounds. This car was developed with RML Group, a British racing engineering company. “The all-new Emira GT4 is an exciting next step following the hugely successful launch of the Emira road car,” says Richard Selwin, Lotus Race Program manager. “We have worked hard with the team at RML Group to ensure this next-generation of Lotus GT car will deliver race-winning performance.” Those entering racing series will be allowed to buy this Emira GT4 cars for the 2022 racing season. However Lotus says availability will be very limited for the first year. It expects to be able to meet total global demand for 2023 as production of the race car continues. Pricing wasnÂ’t made available initially. Related video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

Lotus Elise, Exige recalled over oil line fire risk

Lotus is recalling 451 examples of the Elise and Exige from the 2007 and 2008 model years. The cars in question, built from December 1, 2006 to October 31, 2007 could be affected by an oil cooler line that detaches from its fitting. If the line comes loose it could release oil onto the engine and possibly start a fire, or onto a tire and potentially cause a crash.
A bulletin from the National Highway Traffic Safety Administration indicates the recall is expected to begin on March 4. Notified owners can take their cars to their dealers for repairs to the lateral oil cooler hose and hose fittings. You'll find the full release from the NHTSA below with more information.