The value of an electric vehicle is shaped by the condition of the battery. Its State of Health (SoH) has become one of the key indicators for evaluating used EVs. 

Our State of Health data solution delivers reliable, data-driven insights into battery performance and aging straight from the vehicle, delivered over-the-air via API integration. Using telemetry and diag-nostic data such as charge cycles, temperature, usage patterns, and battery age, it enables precise and transparent assessments across the entire e-mobility ecosystem.

• Fleet managers gain a clear picture of battery health to improve reliability, ensure long-term-value and plan the vehicle deployment, - including remarketing and maintenance strategies - more effectively. 
• Dealers (and their buyers) gain objective, fact-based residual value evaluations estimations that increase confidence in EV transactions and enable more targeted sales and marketing activities.
• Insurers benefit from more accurate underwriting, can assess riskpersonalized products and handle faster claims more preciselyhandling.
• Workshops & Damage Assessors can base claims and service offers on reliable battery condition insights
• Third Party Software Providers can integrate SoH via API into their platforms to offer their clients automated diagnostics and planning

By turning complex vehicle data from the manufacturer OEM into actionable insights, State of Health fosters trust and transparency, supports smarter EV lifecycle management, and helps reduce unnecessary battery replacements, contributing to a more sustainable energy transition.

State of Health at a glance

• Reliable Original OEM Data
• Provision over-the-air via API integration
• Accuracy based on lifecycle insights
• Objective State of Health calculation through backend analytics
• Reliable data foundation for remarketing, insurance, and diagnostics
• Certified data access ensuring legal compliance and market readiness
• Fast ramp-up to new vehicle models

• VIN
• Vehicle brand
• SoH value
• Mileage at last SoH

• Fleet and leasing companies optimizing remarketing and service cycles
• Dealers and workshops offering transparent resale or warranty services
• Insurance providers seeking accurate battery health data for underwriting and claims
• Software and platform providers building EV analytics and diagnostics solutions

This solution is available for selected MOD-4 vehicles of Volkswagen Passenger Cards, Volkswagen Commercial Vehicles, Skoda, Seat, Cupra and Audi, including offline and not-enrolled vehicles

The availability of the Licensed Data is subject to the following vehicle-specific limitations:

• Complete Battery Master Data: Master data for the high-voltage battery (e.g., battery type, cell module manufacturer) must be available.
• Methodology and Accuracy of SoH Calculation: The residual battery capacity is determined based on charging data generated during use of mobile online services. In particular, the amount of energy charged and the charging curve are evaluated considering various established conditions. The result of the calculation may deviate by up to +/- 10 percentage points from the actual residual capacity.
• Active Charging Transmission: The vehicle must should be actively transmitting charging data.
• Minimum Charging Behavior for SoH Calculation: The vehicle must meet the minimum requirements for SoH calculation, including AC charging with a charge swing of at least 40%.

As of 24.09.2025 this applies to:

• VW Passenger Car/VW Commercial Vehicles: ID.3, ID.3PA, ID.4, ID.5, ID.7, ID.7 Tourer, ID.Buzz 
• CUPRA/Seat: Born, Tavascan 
• Skoda: Elroq, Enyaq, Enyaq Coupe 
• Audi: Q4 e-tron 

European Union, United Kingdom, Iceland, Liechtenstein, Norway and Switzerland.

Please note that due diverse privacy laws within the European Union, conditions apply.  Please contact your sales manager for more information.

The data set is provided to authorized customers only. The scope of the permitted data usage is defined in the contract between the B2B data customer and Volkswagen Group Info Services AG.

State of Health - Privacy Policy

State of Health - GDPR Purposes of Use