News for hackers. Stuff that matters.

A comment on Britain's roads can't keep up with our cars. Parent comment

Re:Britain's roads can't keep up with our cars by mytailorisrich on Wednesday September 13, 2023 @04:56AM (#37494065)
A Tesla is heavier than a petrol Range Rover. All EVs are heavy.
[ Parent | on HN ]
Re:Britain's roads can't keep up with our cars by wcoenen on Wednesday September 13, 2023 @05:54AM (#37494569)
The weight difference of comparable ICE cars and EVs is sometimes surprisingly small when you look at the variant of the EV model with the smaller battery.

For example, the BMW X3 is 1670 kg. The Tesla Model Y (SR RWD) is 1778 kg.

[ Parent | on HN ]
Re:Britain's roads can't keep up with our cars by oblio on Wednesday September 13, 2023 @06:05AM (#37494672)
That's only for big cars.

The smallest Tesla is a D-segment car, cars around 4.7m: https://en.wikipedia.org/wiki/D-segment

There are 3 different car categories smaller than the smallest Tesla.

For smaller cars, EVs are a mess, they're between 25 and 40% heavier than equivalent ICEs, that's a humongous difference.

[ Parent | on HN ]
Re:Britain's roads can't keep up with our cars by oblio on Wednesday September 13, 2023 @06:04AM (#37494658)
Well, they did say this:

> Would love to see more Mini/Smart car EVs

Teslas are big cars: https://en.wikipedia.org/wiki/D-segment, they're not Minis. The smallest Tesla is 4.7m long.

There are 3 car categories smaller than the smaller Tesla.

But yeah, EVs are heavy.

[ Parent | on HN ]
Re:Britain's roads can't keep up with our cars by Pet_Ant on Wednesday September 13, 2023 @12:03PM (#37498527)
The larger an EV is the less efficient it is because it has to carry the unloaded battery with it, and it needs more battery for the same function. I don't have the number but I would bet that the energy need is a square of the vehicle weight. It's the same problem rockets have where they have to expend fuel just to carry fuel.
[ Parent | on HN ]