Regan Brown
The world is currently experiencing a transition from fossil fuel vehicles to electric vehicles. In 2023, private cars and vans were responsible for around 10% of global energy-related CO2 emissions. A typical passenger vehicle emits about 4.6 metric tons of carbon dioxide per year. This has prompted countries such as the United Kingdom, China, and Australia to implement policies to subsidize the replacement of fossil fuel-powered vehicles with new energy or fuel-efficient vehicles. Despite these efforts, more than 1 billion vehicles worldwide still run on gasoline or diesel, and it is predicted that gasoline cars will remain dominant in 2040. However, the automotive industry is working to introduce electric vehicles, and it is seen as a possible source of revenue in a declining market.
| Characteristics | Values |
|---|---|
| Number of fossil fuel-powered cars | Hundreds of thousands of electric buses in China; around 975,000 fully electric cars in the UK; 8.9 million barrels of gasoline burned daily in the US |
| Alternatives | Electric vehicles, electric-petrol hybrid vehicles, fuel cell vehicles, hydrogen internal combustion engine vehicles, flexible-fuel vehicles, dual-fuel vehicles |
| Phase-out | Multiple countries and cities have stated they will ban the sale of fossil fuel-powered passenger vehicles at some point in the future; Denmark proposed an EU-wide ban in 2018; non-legally binding declarations, such as the Glasgow Declaration, have been signed by multiple governments and companies to accelerate the transition to zero-emission cars |
| Environmental impact | Fossil fuel-powered cars produce carbon dioxide, the most abundant greenhouse gas, and are the cause of rising global temperatures and climate change; diesel cars produce less CO2 but more NOx than petrol cars |
| Energy efficiency | Electric vehicles use half the energy of fossil fuel vehicles; electric vehicles operate with only around 11% energy loss, while gasoline-powered internal combustion engines lose around 80% of the energy that goes into them |
| Battery manufacturing | Some studies show that making a typical electric vehicle creates more carbon pollution due to the additional energy required to manufacture its battery |
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What You'll Learn
Electric vehicles use half the energy of fossil-fuel vehicles
Electric vehicles (EVs) are increasingly being adopted as a more energy-efficient alternative to fossil fuel vehicles. In 2022, 88% of new vehicles sold in the country were electric, and this trend is expected to lead to no new fossil fuel cars being sold by 2025.
EVs are much more energy-efficient than gasoline-powered cars. Gasoline-powered cars waste around 80% of the energy that gets pumped into their gas tanks due to the thermodynamics of burning fuel to create motion. In contrast, EVs operate with only around 11% energy loss because they do not burn fuel, eliminating the thermodynamic penalty for converting heat to motion. Additionally, EVs can recapture energy during braking, further boosting their overall efficiency.
The assumption that the uptake of EVs will require a significant increase in electricity grid capacity is not entirely accurate. Even with the current electricity blend, an EV requires only about half the energy needed for a gasoline-powered internal combustion engine. This is because power plants, even coal-fired ones, are more efficient than car engines. For example, a coal-burning power plant loses around 68% of its energy, while an internal combustion engine loses around 80%. Therefore, an EV charged with electricity from a coal-burning power plant still uses less energy than a gasoline-powered car.
The efficiency gains of EVs become even more pronounced when considering renewable energy sources. Wind, solar, and hydropower not only reduce pollution but also shrink the overall energy demand due to their higher efficiency. For example, an EV charged with electricity from a methane gas power plant, which is more efficient than coal, uses about half as much energy as a similar gasoline-powered car.
However, it is important to consider the entire life cycle of EVs when assessing their energy efficiency. The manufacturing of EV batteries can require the use of fossil fuels and result in higher emissions during the production phase compared to gas-powered cars. Additionally, the energy used to charge EV batteries can vary in terms of emissions based on the local energy mix. Nevertheless, the overall trend towards cleaner energy sources and improvements in battery technology will likely improve the environmental footprint of EVs over time.
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The phase-out of fossil fuel vehicles
The automotive industry is working to introduce electric vehicles to adapt to these bans. Electric vehicles (EVs) are more energy-efficient than fossil-fuel-powered cars, as they require much less energy to operate and can recapture energy during braking. Additionally, the batteries in new electric cars have a longer lifespan than previously thought, and they produce fewer emissions during the manufacturing process.
However, there is opposition to the idea of transitioning directly from fossil-fuel-powered cars to electric cars. This is because electric cars still require a significant amount of urban land and rely on electricity generation, which can be inefficient and polluting, depending on the source. Instead, it is suggested that the focus should be on investing in other types of sustainable transportation, such as bike lanes, safe walking spaces, electric trains, and electric buses.
Despite these concerns, the phase-out of fossil fuel vehicles is gaining momentum globally. At the 2021 United Nations Climate Change Conference, multiple governments and companies signed the Glasgow Declaration, committing to accelerate the transition to zero-emission cars and vans. Additionally, countries like Egypt, Ethiopia, Indonesia, Japan, Malaysia, Singapore, South Korea, Sri Lanka, and Taiwan have announced plans to phase out fossil-fuel vehicles by 2040 or earlier.
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Electric vehicle conversion
Although it is uncommon, it is possible to convert a conventional vehicle to an all-electric vehicle. This is done by removing the engine of an internal combustion-powered vehicle and replacing it with an electric motor. This method of electric vehicle conversion reduces manufacturing emissions as most car parts are reused, and it is also a more cost-effective option than manufacturing or buying a new electric car.
Certified installers can economically convert heavy-duty vehicles to operate on electricity alone or to improve the efficiency of conventional vehicle designs. Vehicles that have a gross weight rating of less than 10,000 pounds, use more than 48 volts of electricity, and have a maximum speed greater than 25 miles per hour, must meet the Federal Motor Vehicle Safety Standard 305, which is in place to prevent electrical shock and electrolyte spillage.
Neither the EPA nor the California Air Resources Board (CARB) require that EV conversions be certified, as long as the conversion does not involve adding a device that produces fuel combustion emissions. Companies such as Motiv Power Systems and Lightning eMotors provide OEM factory products, electric vehicle chassis, and vehicle repower options.
The phase-out of fossil fuel vehicles involves proposed bans or discouragement on the sale and use of fossil-fuel-powered vehicles, as well as encouragement for the use of alternative forms of transportation. This is because burning oil in car engines produces carbon dioxide (CO2), the most abundant greenhouse gas in our planet's atmosphere. The increased level of CO2 caused by burning fossil fuels is agreed upon by almost all climate scientists to be the cause of rapidly accelerating climate change and rising global temperatures.
As a result, many countries and cities have stated their intentions to ban the sale of fossil-fuel-powered cars, with some already implementing restrictions on their use. For example, many European cities have low-emission zones (LEZs) or zero-emission zones (ZEZs) that restrict the use of fossil-fuelled cars.
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Flexible-fuel vehicles
The most common commercially available FFV in the world market is the ethanol flexible-fuel vehicle, with about 60 million automobiles, motorcycles, and light-duty trucks manufactured and sold worldwide by March 2018. The market is concentrated in Brazil (30.5 million light-duty vehicles and over 6 million motorcycles), the United States (27 million by the end of 2021), Canada (1.6 million by 2014), and Europe, led by Sweden (243,100). In the US, FFVs are also known as "E85 vehicles", and in Brazil, they are known as "total flex" or simply "flex" cars. Automakers, particularly in Brazil and Europe, use badging in their FFV models with some variant of the word "flex", such as Volvo Flexifuel or Volkswagen Total Flex.
Ethanol burns cleaner than gasoline, so FFVs pump fewer toxic fumes into the environment and contribute fewer greenhouse gases. However, ethanol contains less energy per volume than gasoline, so FFVs typically get about 15-27% fewer miles per gallon when fuelled with E85. Ethanol is also more susceptible to absorbing dirt, which can potentially corrode and damage the engine. FFVs are also more expensive to run than gasoline-powered vehicles because, despite ethanol costing less than gasoline, it takes 1.5 times more ethanol to provide the same energy levels.
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Fossil fuel vehicle restrictions
The number of cars that run on fossil fuels is difficult to determine, but there are approximately 975,000 fully electric vehicles on UK roads today, and it is predicted that this number will increase to 6.4 million by 2030. This suggests that the UK has millions of fossil fuel-powered cars. Globally, the number of fossil fuel vehicles will be much higher.
The restrictions on fossil fuel vehicles are part of a wider movement to phase out fossil fuel vehicles. This involves proposed bans or discouragement on the sale of new fossil-fuel-powered vehicles and the use of existing fossil-fuel-powered vehicles. Many countries and cities have stated their intentions to ban the sale of passenger vehicles powered by fossil fuels, and this is often referred to as "banning gas cars", "banning petrol cars", or "the diesel ban".
The primary reason for these restrictions is to reduce the health risks associated with pollution particulates and emissions, such as nitrogen oxides and carbon dioxide, a significant greenhouse gas. Additionally, these bans aim to meet national greenhouse gas targets under international agreements, such as the Kyoto Protocol and the Paris Agreement.
To achieve these goals, countries are employing various strategies. Some countries, like Norway, have incentivized consumers to purchase electric vehicles through subsidies or tax breaks, while also heavily taxing fossil-fuelled vehicles. Other countries, like Germany, have introduced bans on older diesel vehicles that emit higher levels of pollutants. Cities are also implementing low-emission zones (LEZs) or zero-emission zones (ZEZs) to restrict the use of fossil-fuelled cars within their territories. These zones are becoming more prevalent and stringent, making it less convenient and more costly to own and operate fossil-fuelled vehicles in these areas.
The automotive industry is responding to these restrictions by introducing electric vehicles, although with varying levels of success. Despite some opposition to the transition from fossil-fuel-powered cars to electric cars due to concerns about the space required for infrastructure, many types of electric vehicles, such as electric motorcycles and scooters, are quite compact. Additionally, walking and cycling over short distances, particularly in urban areas, are being promoted as attractive and feasible alternatives to fossil-fuelled transportation.
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Frequently asked questions
As of 2023, more than 1 billion vehicles worldwide use fossil fuels.
A typical passenger vehicle emits about 4.6 metric tons of carbon dioxide per year. This number can vary depending on the vehicle's fuel, fuel economy, and the number of miles driven per year.
Some examples of fossil fuels used in cars include gasoline (petrol), diesel, kerosene, and fuel oil.
Yes, alternatives to fossil fuels for cars include electric vehicles (EVs), hybrid vehicles, and fuel cell vehicles (FCVs or FCEVs) that can run on non-fossil fuels such as hydrogen, ethanol, and methanol.
Many countries and cities have pledged to phase out the sale of fossil fuel vehicles and encourage the use of electric vehicles. Some countries, like Norway, are implementing emissions bans in specific areas, while others, like Germany, are replacing diesel locomotives with alternatives such as battery-electric trains.
