Recent comments in /f/explainlikeimfive

Folsomdsf t1_j6d84sf wrote

>You just don't see such 'city cars' in the USA because no red-blooded meat-eating christian would buy such a silly little vehicle.

I'm taking a guess you're european and have no clue why cars are different in the US. We do have those cars, but commutes on average are at minimum twice as long as European counterparts. I don't think Europeans have ever actually looked at a map or globe critically when they say garbage like this. They don't understand how big the US actually is and how much distance MORE a US driver travels. this is why they buy the larger more comfortable models mostly, which has lend to an escalating war of leg room, comfort, etc.

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chaoswoman21 t1_j6d82em wrote

Hybrids are gas powered vehicles. They have electric motors powered by the engine that allow for better fuel efficiency and regenerative braking. My Prius gets 65 mpg on a good drive on the highway.

Edit: The same issue happens with the Prius though. The gas mileage isn't much better than the original. It's due to weight. The current Prius is over 300 pounds heavier.

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Only_Outcome4297 t1_j6d7l84 wrote

There's a bit going on here.

Firstly, the US has a habit of buying big cars, and they've been getting bigger over time. If you add big, you add mass. If you add mass, you reduce fuel economy.

Second, regardless of the size of vehicles increasing, they've been getting heavier due to added structure for crash safety, additional safety systems, as well as added equipment in the vehicle.

Third, ignoring the way that fuel economy has been officially measured has changed over time (so you can't compare official figures separated by 20 years), traffic has increased which results in more stop / start traffic, which means worse fuel economy.

Edit:

I'll add a number 4:. Fuel costs by and large in the US over the last 20 years haven't been a major concern to consumers.

And 5: US federal policies haven't put major pressure on manufacturers to produce more fuel efficient vehicles until relatively recently. A lot of the rest of the world has spent the last 20 years pushing heavily towards reduced emissions, which has had a knock on effect of improved fuel economy.

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hikingsticks t1_j6d7l32 wrote

I think the most recent production ICE engines are tending towards 45% efficiency, which is incredibly impressive.

Also people expect more gadgets these days - heated seats, steering wheels, computers and screens, AC in winter for dehumidification, and so on. All of these put more of a load on the engine.

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