Over-the-air updates: the digital revolution in the automotive industry

Over the past few years, over-the-air (OTA) software updates have become a key technology in the automotive industry. They are revolutionising the way vehicles are maintained, updated and even upgraded – without the need for a visit to the garage. Where software updates used to involve a lot of time, expense and inconvenience, OTA updates now make it possible to quickly and conveniently update vehicle functions directly over the mobile network or Wi-Fi.

Just a few decades ago, software played a minor role in vehicles. However, with the advance of digitalisation, modern vehicles have now become rolling computers with complex operating systems – comparable to smartphones or laptops. This development requires regular and fast updates to keep security, connectivity and functionality up to date. This is precisely where OTA updates come in as a forward-looking solution.

What are the major manufacturers doing?

Major original equipment manufacturers (OEMs) such as Tesla, BMW, Mercedes-Benz, Volvo, Volkswagen and now also Hyundai, Ford and Toyota have established OTA technologies in their vehicles – with different strategies and priorities.

Tesla: Innovation on a weekly basis

Tesla will remain the leader in OTA in 2025. Under Elon Musk's leadership, the company regularly releases updates that go far beyond bug fixes. New features such as advanced FSD (Full Self-Driving) beta versions, range optimisations or new user interfaces are installed directly in the vehicle. This continuous improvement repeatedly takes Tesla vehicles to a new level – without the customer having to move their vehicle.

BMW: Flexible update strategy with smartphone connection

BMW uses a hybrid strategy: updates can be downloaded via Wi-Fi or the My BMW app and transferred later while driving. This effectively distributes the update time, making the installation process more convenient. New features such as personalised driving modes, intelligent voice control and digital key sharing are regularly integrated.

Mercedes-Benz: Premium experience through software

Mercedes-Benz relies on OTA updates to improve connectivity and comfort. New functions such as advanced MBUX operation, personalisation of the interior and over-the-air retrofitting of assistance systems are provided via the Mercedes me app. Remote diagnostics and predictive maintenance are also part of the OTA portfolio and help to increase service efficiency.

Volvo: Safety through updates

Volvo focuses on safety and reliability. Critical security updates, for example for ADAS (Advanced Driver Assistance Systems) functions, are rolled out directly via OTA. A new feature in 2025 is the integration of AI-supported driver assistance, which is continuously improved thanks to OTA updates. Volvo also allows its customers to have vehicle functions automatically adapted based on their driving behaviour.

Volkswagen: OTA on a large scale

Volkswagen has made its ‘ID’ series and, from 2024, many combustion engine models OTA-capable. The strategy aims at holistic vehicle management, including predictive maintenance, cybersecurity patches and software upgrades for infotainment. With the new VW.OS platform, updates are now installed within 15 minutes – a significant improvement over the longer waiting times of previous years.

Benchmarking: differences and similarities

A recent comparative analysis shows that while Tesla relies on continuous innovation and rapid rollouts, German OEMs place more emphasis on process reliability, data protection and stability. The duration of an update also varies greatly – from a few minutes for Mercedes-Benz to 40 minutes for some Volvo models. Differences also arise from the type of transmission (Wi-Fi, mobile network, app) and the server architecture in the background.

Industry trends and a look ahead

In 2025, more and more manufacturers will be relying on OTA – including for mid-range and commercial vehicles. The advantages are clear: fewer recall actions, improved cybersecurity, personalised customer experiences and new business models such as functions on demand. OTA updates will also be crucial for the further development of autonomous driving functions, energy optimisation and AI integration.

We are your partner for future-proof OTA solutions in the automotive industry

Over-the-air updates have long since become more than just a technical feature – they are a central component of digital vehicle architecture. adesso supports automotive manufacturers and suppliers in successfully introducing and further developing OTA technologies. Whether software architecture, backend systems, cybersecurity, update management or user experience – we support our customers along the entire OTA value chain.

With our in-depth industry knowledge and extensive IT expertise, we create the basis for stable, scalable and secure OTA solutions – from concept to operation. This is how we enable faster innovation cycles, higher customer satisfaction and new data-based business models. Together, we are shaping the mobility of the future – connected, intelligent and wirelessly updatable.

Conclusion: OTA as the new industry standard

OTA updates have developed from an innovative bonus to an integral part of automotive technology. They not only offer users convenience, but also create the conditions for continuous innovation. Instead of buying a new car, many functions can simply be downloaded – similar to a smartphone. This makes software the most important component of a vehicle's value and defines the mobility of the future.