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Comment by nradov

16 hours ago

Cars haven't gotten any lighter. Rather the reverse. Battery packs are quite heavy.

Even non-EVs have gotten quite a bit heavier due to the inclusion of more structural safety features and creature comforts.

  • arguably the biggest driver is simply the cost of oil. crumple zones made of styrofoam and plastic bumpers arn't making things heavy.

    e.g. https://www.forbes.com/sites/samabuelsamid/2019/01/03/new-ve...

    • That article is being disingenuous and wrong. It's comparing the lightest possible Civic configuration with the heaviest possible Accord of a different body type.

      The 2000 Accord sedan is 2,712lbs, not 2,987lbs (which would be the wagon).

      The 2019 Civic sedan is 2,743–2,923lbs depending on equipment/trim.

      So yes, the Civic compared to an older car of similar size did get heavier.

      The Miata proves that cars don't have to be heavier, but the Miata also took advantage of much more aluminum compared to the older models. Maybe mainstream cars should also switch to use more aluminum to keep weight down, and you're right that the reason they don't is because oil is cheap enough where weight isn't a priority enough to use more expensive aluminum instead of steel.

      4 replies →

    • Another thing not mentioned by this poor article (everything forbes does these days is hot garbage), is that vehicles which are heavier do damage quartically proportional to their weight - https://en.wikipedia.org/wiki/Fourth_power_law

      So the ever increasing weight of cars, trucks, SUVs, and especially semi-trucks is also responsible for our roads being shit, full of potholes, and expensive to fix.

      2 replies →

  • It's also due to the size of the vehicles that are popular today. SUVs and pickup trucks(used as family vehicles).

    However the increase has also been offset with weight savings in other places.

    - The use of aluminum in suspension components and body panels

    - Long ago the move to unibody over body on frame for small cars

    - smaller engines, V8s weigh more than an inline 4 cylinder and require heavier suspension components.

    For example a 1989 Lamborghini Countach 25th weighs around 3200lbs which is slightly heavier than a 2022 VW Golf GTI (3150~)

    I see comments that blame safety technology (electronic components) for increasing the weight of a car but a blind spot monitoring system probably weighs less than 5lbs. A rear camera is also around that.

    Structural safety and airbags do add to a cars weight but these changes have made cars extremely safe.

Almost like changing the energy source causes a step change in energy optimization priorities . . .