Another way electric cars clean the air: study says brake dust reduced by 83%
A new study is out which quantifies just how much EVs help not just in cutting harmful exhaust emissions, but also cutting other types of pollution that come from personal vehicles. But of course, public transport, biking and walking are even better.
We’ve seen plenty of studies showing how the benefits of shifting to EVs translate to the real world, for example in California and London, where higher EV shares and regulations aimed at cutting down the excesses of polluting vehicles have produced significant air quality benefits already.
As it has become more and more untenable for anti-EV propagandists to deny the air quality benefits of EVs, a common refrain from them has become “but tailpipe emissions aren’t everything, what about brakes and tires, huh?!”
Putting aside for the moment the clear concern trolling involved in this response, it’s always been easy enough to point to regenerative braking as a reason that EVs improve that problem too – since they rarely use the brakes, they obviously wouldn’t emit as many brake particles.
But now we have proper quantification of that, and not only is the reduction in brake dust from battery-electric vehicles (BEVs) quite high, its also much higher than the benefit gained from either conventional gas-only hybrids or plug-in hybrids (PHEVs).
The analysis looked at various “non-exhaust emissions” of road transport, recognizing that as car exhaust becomes cleaner due to greater fleet electrification, other forms of emissions will end up taking over as the dominant pollutants from road transport.
It turns out that BEVs reduce the amount of brake dust by 83%, according to a new analysis by EIT Urban Mobility (a body of the European Union) and Transport for London. The study looked primarily at London, Milan and Barcelona.
The primary reason for this is the use of regenerative braking, meaning that electric vehicles can slow down without rubbing friction brakes. Other vehicles that use regenerative braking reduced brake emissions too, with Hybrids reducing them by 10-48%, and PHEVs by 66%.
Other forms of non-exhaust emissions also analyzed
The analysis looked at other forms of pollution as well, from tire and road wear.
On tire wear, the study assumed that BEVs would be responsible for more tire wear due to their greater weight. The study claims that BEVs are about 20% heavier than gas cars – though much of this is attributable to a vehicle mix that is more focused on larger vehicles, as it seems like every EV manufacturer is making huge SUVs and few are making small cars (a trend that can be seen in gas cars as well, which are 21% heavier than they were 20 years ago, and new EVs are more highly represented at the culmination of this trend).
When looking side-by-side at the best purpose-built EVs and their gas-powered counterparts, such as the Tesla Model 3 and the BMW 3 series, there is little difference in weight (the Tesla is only about ~200lbs heavier, across the model line, a difference of about 5%, not 20%).
Despite the slightly higher levels of tire wear from EVs, brake dust was found to be more unhealthy, as brake dust is much more likely to become airborne (>40%) than tire wear is (1-5%). So EVs create a lot less of the worse thing, and a little more of the less-bad thing.
Even using the study’s 20% number for EV. vs. gas car weight, this doesn’t handicap EVs much. BEVs produce 38% less total brake, road and tire wear combined, without even taking into account their exhaust benefits.
The analysis includes an interactive modeling tool where you can examine different types of transport and the amount of emissions they produce, with electric models being the clear winner out of the various analyzed powertrains.
We plugged in a few numbers and taking into account every form of emissions – brakes, tires, road wear and exhaust – electric cars even fared nearly as well as gas-powered motorcycles. While an individual EV does still produce 57% more total emissions than a gas-powered motorcycle per mile, as long as that car has higher occupancy than the motorcycle, that means it could fare better in terms of emissions per person-mile.
Shifting away from private cars is even better
The mention of person-miles brings up another answer for these problems: “mode shifting,” or moving drivers from cars to other methods of transport.
Buses and other heavy vehicles are accounted for in the tool, and they’ve got bigger numbers, but that doesn’t actually mean they’re dirtier.
While buses are obviously responsible for more emissions than cars individually, once you take into account the number of people they carry, that number plummets significantly. Buses may be responsible for ~4-5 times as many non-exhaust emissions as cars per mile, but a bus can hold an order of magnitude more people than a car can, reducing both emissions and traffic congestion.
And, just as was the case with electric cars, electric buses perform significantly better in terms of total emissions than gas buses do.
Beyond that, you get down to the absolute best answers: walking and biking. These two methods produce negligible environmental impact, and the study recommends that cities focus on encouraging these forms of transport wherever possible.
Luckily, we here at Electrek also love to cover electric bikes, which are a great way to get around that still offers the health and environmental benefits of cycling, but reduce the annoyances you might get from hills or windy days.
Study recommendations
Taking all this information together, the study makes some recommendations. It obviously points out that fleet electrification will be beneficial in reducing non-exhaust emissions, and suggests that that should continue rapidly.
However, it also points out that the total reduction in non-exhaust emissions from shifting drivers to public transport, rather than individual vehicles, can be 5x higher than just electrifying the vehicle fleet alone. So shifting drivers to using public transport should be prioritized when possible. Or, getting people to walk or bike instead.
For those vehicles that do remain on the road, lower-wear products can be encouraged, like carbon composite brake discs or those coated with hard metal coatings. Similarly, some tires are more wear-resistant than others, and there is little regulation forcing focus on lower-wear tire technologies.
Governments should also work to reverse ballooning vehicle sizes and higher SUV share for private vehicles (where have we heard that before…).
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More than 100,000 home batteries across California stepped up as a virtual power plant last week in a scheduled test event, and the results were impressive, according to new analysis from The Brattle Group.
Sunrun was the largest aggregator, Tesla was the largest OEM, and most of the batteries were enrolled
in California’s Demand-Side Grid Support (DSGS) program.
Sunrun’s distributed battery fleet delivered more than two-thirds of the energy during a scheduled two-hour grid support test on July 29. In total, the event pumped an average of 535 megawatts (MW) onto the grid – enough to power over half of San Francisco.
The event, run between 7 and 9 pm, was coordinated by the California Energy Commission, CAISO (California Independent System Operator), and utilities to prepare for stress on the grid during August and September heat waves. And it worked.
Sunrun alone averaged over 360 MW during the two-hour window. The batteries kicked in right when electricity demand typically spikes in the evening, acting just like a traditional power plant, but from people’s homes.
Brattle’s analysis found that the battery output made a visible dent in statewide grid load, when the power is needed most. “Performance was consistent across the event, without major fluctuations or any attrition,” said Ryan Hledik, a principal at The Brattle Group. He called it “dependable, planning-grade performance at scale.”
Residential batteries, Hledik explained, don’t just help shave off demand during critical hours; they can reduce the need for new power plants entirely. “They can serve CAISO’s net peak, reduce the need to invest in new generation capacity, and relieve strain on the system associated with the evening load ramp,” he said.
This isn’t a one-off. Sunrun’s fleet already helped drop peak demand earlier this summer, delivering 325 MW during a similar event on June 24. The company compensates customers up to $150 per battery per season for participating.
Sunrun CEO Mary Powell summed it up: “Distributed home batteries are a powerful and flexible resource that reliably delivers power to the grid at a moment’s notice, benefiting all households by preventing blackouts, alleviating peak demand, and reducing extreme price spikes.”
Read more: The US’s largest virtual power plant now runs on 75,000 home batteries
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Hyundai’s new Elexio electric SUV, which is built in China, could be sold in overseas markets. The CEO of Hyundai Australia calls it “a promising vehicle” that could help the company regain market share from Tesla, BYD, and others.
Will Hyundai’s new Elexio SUV be sold overseas?
The Elexio SUV is the first dedicated electric vehicle from Hyundai’s joint venture with BAIC in China, Beijing Hyundai.
After unveiling it for the first time in May, Hyundai is preparing to launch the new Elexio in China in the next few weeks.
According to a new report, Hyundai’s new electric SUV could be sold in overseas markets, including Australia. Don Romano, the CEO of Hyundai Australia, told journalists (via EV Central) last week during the launch event for the new IONIQ 9 that the company has done a “terrible job” with its EVs so far.
“And the only explanation for that is that we haven’t put enough focus into it,” he explained. However, Romano promises the automaker will do better.
Hyundai plans to boost marketing and support its dealership network, which only began selling IONIQ EV models a little over a year ago.
In what mostly went under the radar, Romano also suggested the new Elexio SUV could arrive in Australia. “It’s under evaluation now,” he said, adding, “it’s definitely a promising vehicle.”
Despite this, it may have a few hurdles to clear. Hyundai’s Australian boss explained, “I still have work to do to ensure that it’s the right vehicle in the right segment at the right price for our market. And I have not reached that level yet.”
Romano told journalists that a final decision needs to be made “in the next 60 to 90 days,” and to check back in three months when he will have a definitive answer.
Hyundai Australia is also looking to launch the IONIQ 2, a smaller, more affordable EV to sit between the Inster EV and Kona Electric.
Romano said, “It’s a potential opportunity,” but didn’t provide any details. He said, at this point, he’s just glad Hyundai is producing it. “Now I just need to get the details and find out, will it fit into our overall product plan and create enough demand to where it becomes a viable option for us? So my initial thought is absolutely. Yep.” Hyundai Australia’s boss told journalists.
The new EVs would help Hyundai, which has been struggling to keep pace in the transition to electric, compete in Australia and other overseas markets.
As of June 2025, Hyundai has sold only 853 EVs in Australia. In comparison, Tesla has sold 14,146 electric vehicles, and BYD has sold over 8,300. Even Kia is selling more EVs in Australia, with 4,402 units sold in the first six months of the year.
Measuring 4,615 mm in length, 1,875 mm in width, and 1,673 mm in height, Hyundai’s electric SUV is slightly smaller than the Tesla Model Y.
It recently underwent three consecutive crash tests among several other global evaluations, consistently outperforming benchmarks. Based on Hyundai’s E-GMP platform that powers nearly all Hyundai and Kia EVs, the Elexio has a CLTC driving range of up to 435 miles (700 km)
Hyundai is set to launch it in China in the third quarter of 2025. Prices have yet to be announced, but it’s expected to start at around 140,000 yuan ($19,500).
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Time’s ticking for snagging a great EV lease deal. With the 25% tariff on imported EVs already in place and the federal tax credit disappearing on September 30, automakers are rolling out serious deals. If you’re thinking about going electric, now’s the moment. Here are some of the best August EV lease deals our friends at CarsDirect found.
2025 Honda Prologue lease from $159/month
Honda’s throwing down a wild lease deal on the 2025 Prologue if you’re in the right state. For a limited time, you can drive off in the all-electric SUV for the equivalent of just $200/month, but there’s a twist. Instead of monthly payments, Honda’s offering a rare One Pay Lease: you drop $4,800 upfront for a 24-month lease. That’s it. No monthly bills, and you save nearly 2% compared to standard rates.
If paying all at once isn’t in the cards, there’s still an option to pay $159/month for 24 months with $1,099 due at signing. Either way, the Prologue ranks among the cheapest new electric SUVs to lease right now.
There are some strings, though. These ultra-low prices are only available in California and other CARB states, and they include a $3,500 loyalty or conquest bonus, so you’ll need to be coming from a Honda lease or ready to ditch another brand.
These deals rely on the EV lease loophole to pass through the $7,500 tax credit. Once that disappears on September 30, expect prices to jump. At that point, buying might make more sense than leasing.
Click here to find a local dealer that may have the Honda Prologue in stock. –trusted affiliate link
2025 Volkswagen ID.4 lease from $129/month
Volkswagen just slashed the ID.4 lease – and it’s a big one. Right now, you can lease the 2025 ID.4 Pro RWD for just $129/month for 24 months with 10,000 miles a year. That works out to an effective cost of only $233/month, making it $264 less than it was before.
This isn’t just a good deal – it’s practically interest-free. The previous lease rate hovered around 1%, but now it’s basically 0%. On top of that, VW is stacking up to $9,250 in lease cash depending on which trim you pick. Even the base Pro RWD gets $7,500 in incentives. This deal only runs through August 31.
Click here to find a local dealer that may have the Volkswagen ID.4 in stock. –trusted affiliate link
2025 Hyundai IONIQ 5 lease from $149/month
Hyundai just dropped one of the best EV lease deals of the summer. The refreshed 2025 Hyundai IONIQ 5 SE Standard Range is going for $149/month for 36 months (10,000 miles a year) with $3,999 due at signing. That brings the effective monthly cost to just $260 – a nearly $100 drop from July’s offer. This deal is available through September 2.
If you’ve got little wiggle room in your budget, the SE Long Range might be worth the upgrade at $189/month with the same upfront cost – only $40 more a month for a lot more range.
Click here to find a local dealer that may have the Hyundai IONIQ 5 in stock. –trusted affiliate link
2025 Hyundai IONIQ 6 lease from $169/month
The 2025 Hyundai IONIQ 6 SE Standard Range is going for $169/month for 24 months (12,000 miles a year) with $3,999 due at signing. That pencils out to an effective cost of $336/month, and with the current lease cash, it’s a solid bargain.
Hyundai is offering up to $11,750 in lease cash on the IONIQ 6, plus an extra $1,000 Inventory Coupon if you lease a car that’s been sitting on the lot for 180+ days. That’s even more than July’s offer.
These offers are good through September 2, so if sleek, efficient, and affordable is your vibe, the IONIQ 6 is a solid choice.
Click here to find a local dealer that may have the Hyundai IONIQ 6 in stock. –trusted affiliate link
2025 Subaru Solterra lease from $279/month
The 2025 Subaru Solterra just became one of the most affordable EVs to lease. It’s going for $279/month for 36 months with just $279 due at signing. That brings the effective monthly cost to just $287, an incredible deal for an all-electric SUV with an MSRP pushing $40,000.
To put it in perspective: the 2025 Honda CR-V Hybrid has an effective monthly cost of $486. So yeah, the Solterra wins this round. This offer’s available through September 2.
Click here to find a local dealer that may have the Subaru Solterra in stock. –trusted affiliate link
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Your personalized solar quotes are easy to compare online and you’ll get access to unbiased Energy Advisors to help you every step of the way. Get started here.
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