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Taking EV drag coefficients to new lows to spice up vary

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Three sedans are contending for many aerodynamically environment friendly EV.

The Mercedes-Benz EQS giant luxurious sedan has a drag coefficient of 0.200, making it essentially the most aerodynamically environment friendly manufacturing Mercedes automobile but.

The brand new Lucid Air sedan, which received Motor Pattern’s Automobile of the Yr award in November, has a 0.200 Cd.

Tesla claims the brand new Mannequin S Plaid, which may attain 60 mph in underneath two seconds, is the most aerodynamically environment friendly manufacturing automobile in the marketplace, with a 0.208 drag coefficient.

The figures for these automobiles usually are not an apples-to-apples comparability, although, as a result of totally different wind tunnels yield totally different outcomes, take a look at procedures range, and the determine used to derive the drag coefficient score is predicated partly on the automobile’s frontal space, which may differ from car to car.

Nonetheless, the decrease the drag coefficient, the much less energy it takes for the drivetrain to maneuver the car and the farther it might go on a cost.

Mercedes-Benz engineers calculated that decreasing the Cd on an EV from 0.23 to 0.22, would yield a 2 p.c improve in driving vary at 56 mph, which provides about 9.3 miles of vary to a cost.

Tesla says {that a} 10 p.c enchancment in aerodynamic effectivity yields a 5 to eight p.c improve within the vary of one in every of its automobiles.

For Lucid’s Air sedan, low aerodynamic drag performed a key position in assembly one in every of CEO Peter Rawlinson’s main objectives: a 500-mile vary between fees for one model of the automobile.

To assist obtain that, the California startup employed Jean-Charles Monnet away from the Pink Bull Formulation One racing staff to go Lucid’s aero growth.


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