Software-defined vehicles (SDVs) are shifting the automotive industry away from hardware-centric design, allowing manufacturers to update vehicle functions, diagnostics, and performance via over-the-air (OTA) updates. While pioneers like Tesla and Rivian established this model, traditional automakers including Mercedes-Benz, Hyundai, and Volkswagen are now integrating zone-based electronic architectures into both electric and internal combustion engine lineups.
The Evolution of Software-Defined Architecture
The core of an SDV is a centralized, zone-based electronic architecture. Unlike traditional vehicles where features are often siloed in disparate hardware modules, SDVs use software to bridge these domains—infotainment, powertrain, body control, and driver assistance. According to Mercedes-Benz, this approach allows for the distribution of updates across the entire vehicle, potentially reducing the need for physical service center visits.
Tesla set the industry benchmark with the Model 3 in 2017. Since then, the market has seen a rapid influx of SDV-capable vehicles from manufacturers like Rivian and Lucid. The shift is not merely about navigation or media; it enables manufacturers to refine vehicle efficiency and safety long after the car leaves the factory floor.
Did you know?
Zone-based architecture can reduce manufacturing complexity by lowering the number of required hardware modules and simplifying cable routing. This reduction in wiring—and the amount of copper used—can lower both the total production cost and the vehicle’s curb weight.
Mercedes-Benz and the Expansion to Combustion Engines
Mercedes-Benz is transitioning its broader fleet toward SDV principles. The company’s 2027 GLE and GLS SUV models serve as a key example. While previous iterations used the MB.OS platform primarily for infotainment, these updated models extend the operating system to cover four critical domains: infotainment, automated driving, comfort/body, and powertrain/charging.
These vehicles feature the “Superscreen,” a glass-covered dash housing three 12.3-inch displays. Integration with generative AI—specifically OpenAI’s ChatGPT-4o and Google Cloud’s Automotive AI Agent—allows the MBUX Virtual Assistant to manage climate, music, and navigation through natural language. Additionally, the inclusion of the Nvidia-powered MB.Drive Assist Pro brings Level 2+ driver assistance capabilities to these platforms, mirroring the sensor-heavy approach found in the company’s dedicated electric vehicles.
Mainstream Adoption Beyond Electric Models
While the initial wave of SDVs focused almost exclusively on electric vehicles (EVs), the technology is moving toward more accessible price points and diverse engine types. Hyundai Motor Group is actively implementing its Android Automotive-based “Pleos Connect” platform across its lineup, including upcoming models like the IONIQ 3 and the Grandeur sedan.
Volkswagen is similarly pursuing this shift through a partnership with Rivian. The goal is to bring a zone-based software architecture to the ID.1, a compact vehicle aimed at the sub-20,000 euro market segment. By standardizing these platforms, automakers aim to provide a consistent user experience—including app stores and AI-driven assistants—across their entire catalog, rather than reserving high-end software features for flagship EVs alone.
Pro Tip:
When shopping for a modern vehicle, look for manufacturers that commit to regular, free OTA updates for bug fixes and feature enhancements. While some premium services like advanced ADAS or high-speed connectivity may require subscriptions, essential system improvements should ideally be provided as part of the vehicle’s lifecycle maintenance.
Frequently Asked Questions
What is the primary difference between a traditional car and an SDV?
A traditional car relies on fixed hardware for most functions. An SDV uses a software-heavy, zone-based architecture that allows the manufacturer to update vehicle performance, safety features, and comfort settings remotely via OTA updates.
Do all SDVs require an electric powertrain?
No. While many early SDVs were electric, manufacturers like Mercedes-Benz are now applying SDV software principles to hybrid and internal combustion engine models, such as the 2027 GLE and GLS.
Are OTA updates always free?
It depends on the manufacturer. Companies like Tesla and Rivian often provide monthly updates that include bug fixes and new features for free. However, some advanced services, such as premium navigation or extended driver-assistance capabilities, are frequently offered as paid subscription tiers.
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