Nature Positive Role of the Automotive Sector
Page 21 of 62 · WEF_Nature_Positive_Role_of_the_Automotive_Sector.pdf
2.2 Pollution
Pollution occurs across all stages of the automotive
value chain.93 Upstream production processes
can lead to land, freshwater and ocean pollution,
including through the release of chemicals that
are harmful at high concentrations, persistent or
toxic materials, highly saline water and run-off
from livestock farming for leather. For example,
the automotive industry uses 12% of global steel94
(with steel making up 50-60% of the average
vehicle)95,96,97 and steel production generates 145
billion tons of wastewater per year.98 Furthermore,
upstream mining operations, energy, chemicals
and fibre production can also release atmospheric
pollutants, including dust, solvents and sulphur
dioxide, which contribute to acid rain. Waste is also
produced from non-product outputs, including ore
heaps and tailings, resins, sludges, glass, metal
and polymers.
In direct operations, the automotive manufacturing
process itself can contribute to land, freshwater
and ocean pollution, with metals and metal
compounds making up 71% of the chemical
waste managed by the automotive industry.99
Other pollutants include atmospheric emissions
from manufacturing processes and noise pollution.
Waste is similarly produced from non-product
outputs, including glass, metal, polymers,
cardboard, rubber and leather. For example,
750,000 tonnes of waste was generated during car
production in the EU in 2022.100
Finally, the downstream use of vehicles can have
material impacts on both the environment and
human health. Downstream, land, freshwater
and ocean pollutants include particulate matter and chemicals, such as microplastics from tyre
wear, brake wear, dust resuspension, motor oil
leaks and washer fluids. Indeed, a 2020 study
by the Pew Charitable Trusts found that 78% of
microplastic leakage into the ocean (approximately
1 million tons) was caused by tyre dust in 2016.101
Reducing mileage, better water sedimentation
disposal and other known solutions can all help
address this challenge. The study found, however,
that without novel innovation for tyre design and
manufacturing, tyre dust will remain the largest
contributor of microplastic leakage into the
ocean. Microplastics are not just a problem in the
ocean. The impact of microplastics in terrestrial
environments is being studied, with indications
that they can cause impacts on soil health and
nutrient cycling, alongside other processes.102
Likewise, fluid pollutants such as motor oil also
flow into waterways, where 1 gallon of used oil can
contaminate 1 million gallons of water.103
Non-GHG air pollution (including pollutants such as
nitrogen dioxide, particulate matter, hydrocarbons
and carbon monoxide) is also a material impact
from downstream vehicle use. Road transport was
the largest source of nitrogen oxides in the EU in
2020 and was responsible for 37% of emissions,104
with 52,000 deaths attributed to nitrogen dioxide
in the EU in 2021.105 Globally, roadside traffic was
responsible for 25% of particulate matter (PM2.5)
pollution in urban areas, with the majority estimated
to be non-exhaust matter. Exposure to ambient
particulate matter has been ranked as the seventh
most important risk factor for mortality, causing
an estimated 4.2 million premature deaths globally
in 2015.106
A 2020 study by
the Pew Charitable
Trusts found that
78% of microplastic
leakage into the ocean
(approximately 1 million
tons) was caused by
tyre dust in 2016.78%
21
Nature Positive: Role of the Automotive Sector
Ask AI what this page says about a topic: