Questions tagged [cars]

automobile, mainly used for transporting people For questions also about other types of vehicles or about transport in general use the [vehicle] or [transport] tags respectively.

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35
votes
3answers
3k views

Are electric cars as environmentally friendly as we think they are?

Given the fact that the average lifetime for a car battery is 3 years and all of the batteries end up at a landfill at the end of their lifetime, how sustainable are electric cars in providing a ...
10
votes
6answers
382 views

To what extent (if any) are electric vehicle batteries recyclable?

Are there any existing procedures for the recycling of electric vehicle car batteries, and if so what are they? In particular I'm interested in those used in the Volkswagen E-Golf, though general ...
15
votes
4answers
853 views

What has a lesser carbon footprint? Continue to drive my current car until it is no longer useful or to buy a new car?

I have 2003 Honda Accord. It gets ~20 MPG CITY (8.5 km/liter). I'm trying to figure out if it is more sustainable in the long run to: continue to drive the Accord until it dies (it's still in great ...
23
votes
3answers
2k views

How to determine whether hybrid cars are really more sustainable than traditional cars?

I purchased a Prius many years ago, but many of my friends have put forth claims that the batteries are very toxic and thus I may in fact be creating more harm than good in using a hybrid and that ...
42
votes
9answers
32k views

How effective is turning a car's engine off while standing at a traffic light?

I know some countries enforce having cars automatically shut down the engine when stopping at a traffic light. How much resources are really saved by this process? Does the car need to be ...
17
votes
2answers
5k views

When does using a car's start-stop system become more economical?

In this question it was asked how economic it is to turn your car's engine off when waiting for a traffic light. In the accepted answer it is said that it becomes more economical to turn it off if you ...
21
votes
4answers
847 views

How to drive to be the most fuel efficient

I saw a poster at a thruway rest stop once that said something along the lines of accelerating quickly is worse for fuel efficiency and carbon emission than idling for several hours (I don't remember ...
13
votes
2answers
290 views

What is the environmental impact of replacing a vehicle?

I'm currently driving a Suzuki SX4 2008. It gets (supposedly) 30 MPG (9.4 l/100km) on highways, though I suspect it's much lower now because of the beating I have given the poor car and lack of ...
13
votes
6answers
417 views

Older biodiesel vehicle or newer but used hybrid, which is actually more sustainable?

I've heard a lot of back and forth on this issue, but when purchasing our next vehicle which is actually the better way to go? For us, we cannot go fully electric at this point due to drive times, ...
8
votes
3answers
276 views

Sustainablity of Telecommuting

I'm looking for sources that can give some reasoned arguments about Telecommuting in sustainablity terms - how much of an energy costs in there to working at home compared with commuting X miles in Y ...
7
votes
4answers
635 views

How to prevent older Diesel cars from emitting NOx, dust and smell?

I'm considering on buying an older car but I haven't decided if it should be gasoline or diesel powered. I would like to choose a diesel, but I'm considering the negatives: smoke smell NOx emisions ...
4
votes
5answers
72 views

How to prevent pollution caused by a taxi rank? Is there a solution to the 'edging forward' cost of cars in a queue?

I am looking at ways in which a heavily polluting taxi rank near a train station could reduce its pollution footprint. My first thought was that the pollution was mostly down to idling and I am ...
4
votes
1answer
108 views

Which countries, regions, or cities have set a date to ban the sale of gasoline and diesel vehicles?

This week, the UK announced that sale of gasoline and diesel cars will be banned by 2035. This new policy moves the date up by five years, and also includes hybrid vehicles. From 2035 on, only ...
3
votes
3answers
94 views

Does Start / Stop technology in cars have an impact on air quality and by how much?

I have repeatedly heard from various car enthusiasts that start stop technology has no benefit in improving air quality (or the tiniest smallest negligble benefit). Does it have an effect and how much?...
3
votes
4answers
160 views

Are there any unsustainable supply-chain issues unique to hydrogen fuel cell vehicles?

I was recently reading that lithium mining for electric vehicle batteries is wreaking havoc on deserts in Chile. One proposed alternative to EVs in the search for a replacement for petroleum-fueled ...