2025-12-18

Formal Verification for Automotive OTA: engineering trust into every update

A guide for CTOs and automotive leaders building safety-critical software at scale

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Nowadays, cars evolve long after they leave the factory. The average modern car has hundreds of ECUs, complex distributed architectures, and intensifying cybersecurity requirements – in order for cars to stay updated and keep with the rapidly changing automotive landscape, OTA updates are essential. Unfortunately, they’re also one of the hardest challenges in automotive engineering. In order to ensure that every update is safe, verifiable, and recoverable, proof is required in addition to testing.

In this whitepaper, we explain why formal verification is becoming a centerpiece of next-generation OTA systems, and demonstrate how OEMs can use mathematical guarantees to strengthen safety, security, and compliance.

As the move toward software-defined vehicles accelerate, the pressure grows:

  • 100+ ECUs must update reliably under strict timing and safety constraints
  • Connectivity remains unpredictable, yet updates must always complete safely
  • Regulations require traceability, authenticity, and predictability
  • Customers expect vehicles to improve over time, not degrade

Traditional validation can’t allow coverage for every failure mode in such distributed systems. Formal verification fills this gap by proving that critical OTA properties hold under every circumstance.

This whitepaper will help you:

  • Understand why OTA is particularly difficult in automotive settings
  • Determine where traditional testing has its limitations and where formal verification provides certainty
  • Learn how different formal verification methods can apply to OTA workflows
  • Apply proven properties directly to regulatory requirements
  • Explore architectural patterns that support safe, scalable, and verifiable updates

Here at Canonical, we’re using our expertise in updating millions of devices to assist OEMs in providing OTA systems that are both reliable and demonstrably secure. This whitepaper should be your next step if you want to create automotive platforms where trust is measured rather than presumed.

If you have any questions, feel free to reach out to our team.

Please fill in the form to download the whitepaper.

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