Every week, India registers thousands of new electric vehicles. And every week, the conversation around them is almost identical — range, charging speed, price. Fair questions, all of them. Yet one almost never gets asked: what are core materials in these vehicles? That question, I would argue, is as important as any of the others. Not just for engineers. For everyone.
That gap in conversation stayed with me.
We have done a remarkable job in India of building public excitement around electric mobility. As per Vahan data, over 1.4 million electric two-wheelers were registered in fiscal year 2026 — a 22% jump year-on-year. These are not small numbers. They represent a genuine shift in how India thinks about getting from one place to another.
But here is what I think about when I look at those numbers: every one of those vehicles had to be built from something. And the something matters.
The Part Nobody Sees
There is a quiet revolution happening inside every electric vehicle. It does not show up in horsepower figures or charging speed comparisons. It lives in the walls of battery packs, in the curves of body panels, in the clarity of headlamp covers, and in the foam that sits — invisibly, crucially — between individual battery cells.
The materials enabling this revolution belongs to two chemical families: polycarbonate and polyurethane. I spend a great deal of my working life thinking about both. Let me try to explain why they matter to you — even if you may not have heard those words before.
Polycarbonate is, simply put, a type of high-performance plastic. You have probably held it without knowing it — it is in your eyeglass lenses, the switches that you flip on & off thousands of times, and the headlamps of most modern cars and two wheelers. What makes it remarkable is the combination of properties it packs into a single material. It is the only transparent material that has highest strength and is lightweight too. It handles heat well; resists flame and holds its shape under pressure. It can be moulded into complex forms. And because it is thermoplastic by nature, it can be recycled and reused — which matters enormously as the industry begins asking hard questions about what happens to these vehicles at end of life.
Polyurethane is even more ubiquitous. The foam in your sofa, the mattress that you sleep on, the sole of your running shoe, the insulation in your refrigerator — all is made of polyurethane. In an electric vehicle, it does something far more critical: it protects the battery. It absorbs mechanical shocks. It provides thermal insulation between cells. And in its most advanced forms, it actively slows the spread of heat and fire — reducing the risk of the chain reaction that battery engineers call thermal runaway, and that the rest of us simply call a fire.
Together, these two materials are doing some of the most important engineering work in the EV world. They are just doing it quietly, out of sight.
Why Every Kilogram Tells a Story
In a battery-electric vehicle, every kilogram of weight reduced from a vehicle’s structure directly translates into a longer range — a straightforward relationship that makes lightweighting one of the most powerful levers in EV design.
This is why lightweighting — reducing the weight of a vehicle without reducing its strength or safety — is perhaps the most consequential engineering challenge in EV development. And it is precisely where polycarbonate earns its place. When a manufacturer replaces a glass panel with polycarbonate, the weight savings are immediate and significant. When structural and aesthetic body components shift from metal to advanced polymer composites, the cumulative effect on range can be the difference between a vehicle that sells and one that does not.
The global market for lightweight materials in EVs is expected to accelerate as automakers seek to improve vehicle range, efficiency, and performance. Asia-Pacific is expected to remain the largest market due to the region’s leadership in EV manufacturing and adoption.
For India specifically, where two wheelers dominate EV adoption and where cost sensitivity is acute, every gram shed from a vehicle’s structure is a gram that allows more battery capacity, longer range, or a lower price point. The materials question is not academic here. It is commercial.
The Safety Conversation We Need to Have
I want to address something honestly; EV battery fires are statistically less common than fires in petrol-powered vehicles. But when they happen, they are visually dramatic, they spread quickly, and they lodge themselves in public consciousness in a way that slows adoption. If the EV’s adoption has to propel— then safety cannot be an afterthought engineered around with disclaimers. It has to be solved at the molecular level, inside the battery pack itself. This is where advanced polyurethane foams become genuinely important.
The specific challenge is called thermal runaway: a chain reaction where heat generated in one battery cell triggers the next, and the next, and the next, until the entire pack is compromised. Preventing this cascade requires a material that can sit between cells, absorb and dissipate heat, and physically resist flame propagation — all while being lightweight enough not to defeat the purpose.
In July 2025, Covestro launched a technology called Baysafe® BEF — a flame-retardant encapsulation polyurethane foam series designed specifically to address this challenge. The foam is lightweight. It actively inhibits fire spread between cells. And it is designed to meet some of the world’s most demanding new safety standards — including China’s GB 38031-2025, a national standard requiring that EV batteries must not catch fire or explode even during thermal runaway. That standard is shaping regulatory thinking globally, and India will not be far behind.
For a market like ours — where electric two-wheelers are charged overnight in homes, sometimes in conditions that are far from ideal — this kind of material-level safety engineering is not a luxury. It is the foundation on which consumer trust is built.
The Life After the Road
Here is something that does not get discussed nearly enough in the India EV conversation: what happens to these vehicles at end of life?
We are at an early enough stage of EV adoption in India that the decisions we make now about materials and recycling will determine whether this transition creates a new waste problem or models something genuinely better. The choices that OEMs, suppliers, and policymakers make today will echo for decades.
In April 2025, Covestro introduced a line of post-consumer recycled (PCR) polycarbonates made from end-of-life automotive headlamps — containing 50% recycled content, TÜV Rheinland-certified, and already being validated by Volkswagen and NIO for future vehicle use. The concept is elegant in its simplicity: the polycarbonate from a scrapped vehicle’s headlamp re-enters a new vehicle’s supply chain. Car-to-car. A closed loop.
This is not a pilot programme. It is a commercially available, certified material — developed through collaboration with the GIZ, Volkswagen, NIO, and recycling partners — with the supply chain infrastructure to back it up. Covestro has also introduced polycarbonates with up to 90% recycled content and opened a dedicated mechanical recycling compounding line in Shanghai. The industrial model for circular automotive materials exists. The question for India is: when do we start building it here?
What This Means for India’s EV Builders
I want to speak directly to the engineers, product leaders, and founders who are building India’s EV future.
The materials you choose is a strategic decision. They determine your range. They determine your safety profile. They determine your regulatory headroom as standards inevitably tighten. And increasingly, they will determine whether your vehicle qualifies for markets and customers who demand certified sustainable content.
The good news is that the materials to make these decisions well already exist. The better news is that India’s EV ecosystem — with its scale, its engineering talent, and its appetite for purposeful progress — is perfectly positioned to adopt them faster.
At Covestro, we are here to be a partner in that journey. Not as a supplier who shows up with a price list, but as a collaborator who brings materials science, application expertise, and circular economy thinking to the table together.
India’s electric mobility story is still being written. The battery gets the headlines. But it is the materials — the polycarbonates and polyurethanes that nobody photographs — that will quietly determine whether that story ends well.
I think it will.
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