Reason why EVs look so similar, car makers are obsessed with the drag coefficient (cd) because of low range 😂
Einer der Gründe, warum E-Autos so ähnlich aussehen ist, weil die Autobauer wegen der geringen Reichweite vom cw-Wert besessen sind 😂
Ein anderer Grund könnte sein, dass die Chinesen und Europäer das besonders aerodynamische Design von Tesla kopiert haben.
Wegen der geringen Reichweite wird vor allem der Autobahn der cw-Wert extrem wichtig. Der Luftwiderstand steigt nämlich mit dem Quadrat der Geschwindigkeit an.
Der Strömungswiderstandskoeffizient (cw-Wert) gibt an, wie gut ein Objekt durch ein flüssiges Medium (zum Beispiel Wasser oder Luft) gleitet. Je geringer der cw-Wert desto besser.
Typische cw-Werte für Autos reichen von 0.2 (EVs) bis 0.5 (Pickups). Das sind schon enorme Unterschiede, die vor allem ab Geschwindigkeiten von 80 km/h und aufwärts signifikant werden.
Um den cw-Wert zu minimieren, versuchen die Hersteller eine möglichst eierförmige, windschlüpfrige Form zu erreichen. Besonders fällt das beim Mercedes EQS auf, der wegen der Windoptimierung meiner Meinung nach deutlich an Eleganz eingebüßt hat. Man könnte auch sagen, die Deutschen haben es mit dem cw-Wert (0.20) übertrieben.
Weitere typische Design-Merkmale bei Elektro-Autos sind auch die versenkbaren Türgriffe, um den cw-Wert weiter zu senken und das Glasdach, um vertikalen Raum wegen der hohen Batterie einzusparen, die sich meistens am Fahrzeugboden befindet. Skateboard design.
All das führt dazu, dass Elektro-Autos immer ähnlicher aussehen, weil die Hersteller wegen der Reichweiten-Angst extrem auf den cw-Wert fokussiert sind, sein müssen. Jede Optimierung zählt.
Vielleicht ändert sich das aber in der Zukunft auch wieder, wenn sich die Batterie-Technologie verbessert.
Was sagt ihr dazu? Ist euch auch aufgefallen, dass Elektro-Autos immer ähnlicher werden und das äußere Design hauptsächlich vom cw-Wert getrieben wird?
Drag coefficient war: Xiaomi SU7 vs. Tesla Model 3
https://x.com/TCMesla/status/1946586374657708127
English
One of the reasons why electric cars look so similar is because car manufacturers are obsessed with the drag coefficient due to their limited range.
Another reason could be that the Chinese and Europeans have copied Tesla's particularly aerodynamic design.
Due to the limited range, the drag coefficient is extremely important, especially on the highway. This is because air resistance increases with the square of the speed.
The drag coefficient indicates how well an object glides through a liquid medium (e.g., water or air). The lower the drag coefficient, the better.
Typical drag coefficients for cars range from 0.2 (EVs) to 0.5 (pickups). These are enormous differences, which become significant especially at speeds of 80 km/h and above.
In order to minimize the cd value, manufacturers try to achieve as egg-shaped and aerodynamic a form as possible. This is particularly noticeable in the Mercedes EQS, which, in my opinion, has lost much of its elegance due to the wind resistance optimization. One could also say that the Germans have gone too far with the drag coefficient (0.20).
Other typical design features of electric cars include retractable door handles to further reduce the drag coefficient and a glass roof to save vertical space due to the high battery, which is usually located on the vehicle floor. Skateboard design.
All of this means that electric cars are starting to look more and more alike because manufacturers are extremely focused on the drag coefficient due to range anxiety. Every optimization counts.
But perhaps this will change again in the future as battery technology improves.
What do you think? Have you also noticed that electric cars are becoming more and more similar and that their exterior design is mainly driven by the drag coefficient?
Oder weil viele sich das Grunddesign von Tesla anschauen. 🤫
Die haben ja cw Tests etc alles bereits gemacht und alles ins Design implementiert.
Bah I'll just stick to gasoline cars!
!PIZZA
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Yeah, I’ve noticed the same thing . Most EV designs look almost identical because of the obsession with the cw-value 😅
I think electric cars have standard design and implementations
!BBH
Yes, I also think that most EVs look the same. In a way, that's not a bad thing. Then you don't have to think too much about which car to buy. I've talked to friends and they also think most EVs are really ugly. For me personally, buying an EV is still too expensive. My little reliable Japanese car is enough for me, and as long as I can still afford gasoline, I won't be replacing it. It's not that I don't find electric cars exciting. I even think that most electric cars have massive advantages over combustion engine cars. But financially, it's not for me at the moment. I hope that the costs will come down so much that I will be able to afford one in the future.
Dann bin ich gespannt, wann die Außenspiegel wegfallen für eine elektronische Lösung.
!HUG
Das gibt's bei manchen Autos auch schon, wäre der nächste Schritt, um den cw-Wert zu verbessern 😂
Once battery tech improves, hopefully we’ll see more variety instead of every EV looking like a teardrop on wheels 😂😂
Wäre mal interessant zu wissen, wenn sie die Autos anders designen, sodass sie als schön empfunden werden, ob sie dann trotz etwas geringerer Reichweite mehr als jetzt verkauft werden würden. 🤔
Das hab ich mir auch gedacht, denke dass dann mehr verkauft werden würden. Bis jetzt ist das Design oft sehr hässlich.
I also noticed that on the electric cars in my area. They all have the same design and structure
Oh, I hadn't noticed. I thought we were in the midst of Mao's revolution.
I'm too much of a petrol head. #SaveCars
That makes a lot of sense. I always wondered why most EVs look almost the same, but now I see it’s more about performance and range than style. Hopefully in the future we’ll see more unique designs too.
F@ck e-cars
I am totally old-fashioned. My choice of cars had always been classics, cars that I could fix myself, in extreme cases with baling wire and duct tape (a broken fan belt I once replaced with a nylon stocking, which got me to the next repair shop). Since I left Canada, I had no need for a car, so I go with public transportation. But in my time in Canada I owned cars from the sixties and seventies, mostly Mopar, GM and Ford, also a 4WD truck from GMC. I might be wrong, but in the extreme colds of winters I experienced in Western Canada, I doubt a e-car would stand much of a chance. One vehicle that always started for me was the GMC truck, even when temps were approaching -40°C. Of course when at home, I had them plugged in with blockheaters, but being away from home, that was not always possible. Back then, fuel efficiency was no big deal: I remember filling a 65 liter tank for around 10 $. Some of my cars were considered muscle cars, like my 67 Plymouth Fury.
I miss those good old days.
Each other's designs are being copied, but each other's speed cannot be copied. Each person puts their own materials into the car according to their own calculations.
They have all been quite similar. I think most car manufacturers just copy it as it seems to be the most ideal design.
Your analysis is very informative and logical. With improvements in battery technology, there is a possibility that diversity in design will return in the future.