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Subaru shows its first in-house EV tech in a 510 hp prototype

Subaru's own EV platform, a Panasonic cylindrical-cell battery and an AMD-chip control unit debuted in a 510 hp AWD test car. Some tech could arrive by 2029.

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Blue Subaru Performance-E STI concept on a stand at the Japan Mobility Show 2025 (illustrative photo, not the prototype)
Image: TTTNIS / Wikimedia Commons, CC0
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So far, every modern electric Subaru has been a close relative of a Toyota. That is about to change. On 18 October, Subaru showed reporters a prototype built on its first in-house EV platform at its proving ground north of Tokyo, Automotive News reports. Electrek and InsideEVs have also covered the reveal.

What the test car carries

The camouflaged mule looks like a cut-up Outback, but Subaru stresses that the shape is not final. The hardware underneath is the news:

  • Power: an all-wheel-drive setup with about 510 hp (380 kW) in total, and 0–100 km/h in under four seconds.
  • Motors: e-axles developed with Toyota group supplier Aisin. Subaru says they are smaller and lighter, and claims a 30% efficiency gain over an industry average it did not define.
  • Battery: a pack of 4,000 cylindrical cells from Panasonic Energy. Subaru says it is roughly a quarter lighter than its previous pack and targets an energy density 20% above the industry average.
  • Weight: the platform aims to shed about 100 kg compared with Subaru's current EVs.
  • Electronics: an integrated control unit for driver assistance, chassis, powertrain and infotainment, with a custom chip co-developed with AMD. It will allow over-the-air updates, a first for a car Subaru develops on its own, and will support AI features in a future version of EyeSight.

Subaru has not given battery capacity, range or charging speed.

When it could reach showrooms

Executives say some of this technology could start appearing around 2029. No model or date has been confirmed. "By developing vehicles in-house and having EV technologies on our own, we can quickly deliver to our customers the peace of mind and driving pleasure that define Subaru," engineering chief Takatomo Watamori said, as quoted by Electrek.

Subaru's road to its own EV

  1. 2023

    Solterra

    Subaru's first modern EV, closely related to the Toyota bZ4X.

  2. 2024

    Aisin and Panasonic deals

    Partnerships for e-axles and batteries begin, according to InsideEVs.

  3. 18 Oct 2026

    In-house prototype

    A 510 hp test car with Subaru's own platform is shown to the press.

  4. ~2029

    First rollout

    Some of the new technology could reach production cars.

Subaru is not leaving Toyota behind for now. The partnership still covers the Solterra, Trailseeker and other models. Like Rivian, which wants to license its own tech to other carmakers, Subaru wants more control over the software and electronics. If you are weighing up an EV today, our EV battery care tips and home charger guide apply whichever brand you choose.

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