The rise of Electric Vehicles (EV) has crafted the path for one old school idea to make a comeback. The idea is known as in-wheel motor (IWM). This technology was founded a century ago (yes you read that right), by Ferdinand Porsche and now it is being powered by modern engineering and the push for cleaner, more efficient transport.
This technology was first introduced by Porsche back in April 1900 at the Paris World’s fair. It was revolutionary for the time: no central engine, no bulky transmission—just motors in each wheel.
However, during that time, internal combustion engines (ICE) were on the rise and it was considered the future. Thus, the IWM was shelved, however, maybe it is time for it make its presence felt.
So how does this work? At the heart of it, IWMs ditch a lot of the traditional components we associate with cars such as driveshafts, gearboxes, even axles. With the motor built directly into the wheel, it cuts down on mechanical losses and free up loads of space.
That means roomier interiors, sleeker exteriors, and better energy efficiency. On top of that, each wheel can operate independently, which gives the vehicle sharper handling and better traction in tricky conditions.
Losing the bulkier parts doesn’t just help the car’s silhouette—it has practical perks too. You get a lower centre of gravity, more space for batteries, and more flexibility in overall vehicle design. The result? EVs that go further on a single charge and look better doing it.
Companies like Protean Electric and ConMet are at the forefront of this tech revival. They’re not just talking about it—they’re already putting IWMs into light commercial vehicles and even using them in lorries to power refrigeration units. The fact that this tech is already being road-tested shows it’s more than just a futuristic concept.
Just like with all the technology, this too has its own flaws. One of the major issue with this technology is that they add to the “unsprung weight” which is the weight that is supported by the suspension. This can make handling a bit more tougher for the driver.
(Image: Protean Electric)
Other than that, the fact that wheels of a car is exposed to rain, grit, potholes need to be taken into account. Since the motor is placed in the wheel system, any damage to the wheel could indirectly or directly affect the wheel.
However, the industry’s catching up. Suspension systems are being reworked to handle the extra load, and companies are putting their motors through the wringer in durability tests.
This technology could revolutionise the automotive industry if it becomes mainstream. One thing is for sure, Porsche was about 100 years ahead of his time.
(Source: Automotive, Porsche Newsroom)
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