{"id":1251,"date":"2026-05-18T11:34:35","date_gmt":"2026-05-18T11:34:35","guid":{"rendered":"https:\/\/over-the-air.de\/uncategorized-en-us\/ota-updates-in-cars-what-they-are-how-they-work-and-why-they-are-changing-the-vehicle-trade\/"},"modified":"2026-10-21T11:00:46","modified_gmt":"2026-10-21T11:00:46","slug":"ota-update-car","status":"publish","type":"post","link":"https:\/\/over-the-air.de\/en\/over-the-air\/ota-update-car\/","title":{"rendered":"OTA updates in cars: what they are, how they work \u2013 and why they are changing the vehicle trade"},"content":{"rendered":"\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-ec6f27bb wp-block-group-is-layout-flex\" style=\"border-top-left-radius:10px;border-top-right-radius:10px;border-bottom-left-radius:10px;border-bottom-right-radius:10px;min-height:0px;margin-top:0;margin-bottom:0;padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\"><div style=\"margin-top:var(--wp--preset--spacing--40);margin-bottom:var(--wp--preset--spacing--40)\" class=\"wp-block-post-author\"><div class=\"wp-block-post-author__avatar\"><img alt='' src='https:\/\/secure.gravatar.com\/avatar\/02eccd49c807e1051c1c85a63d7362656782be28bab43470f1bb081d6cd73154?s=96&#038;d=mm&#038;r=g' srcset='https:\/\/secure.gravatar.com\/avatar\/02eccd49c807e1051c1c85a63d7362656782be28bab43470f1bb081d6cd73154?s=192&#038;d=mm&#038;r=g 2x' class='avatar avatar-96 photo' height='96' width='96' \/><\/div><div class=\"wp-block-post-author__content\"><p class=\"wp-block-post-author__name\"><a href=\"https:\/\/over-the-air.de\/en\/author\/patrick-schroeder\/\" target=\"_self\">Patrick Schr\u00f6der<\/a><\/p><p class=\"wp-block-post-author__bio\">Patrick Schr\u00f6der has nearly 20 years of hands-on experience in the automotive industry \u2013 from vehicle trading to international remarketing. Today, his main focus is on how new technologies can make the automotive trade more efficient, more transparent and fit for the future.<\/p><\/div><\/div><\/div>\n<figure class=\"wp-block-post-featured-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"900\" src=\"https:\/\/over-the-air.de\/wp-content\/uploads\/2026\/10\/ota-update-beim-auto.webp\" class=\"attachment-full size-full wp-post-image\" alt=\"OTA update car\" style=\"border-top-left-radius:15px;border-top-right-radius:15px;border-bottom-left-radius:15px;border-bottom-right-radius:15px;aspect-ratio:16\/9;width:100%;object-fit:cover;\" srcset=\"https:\/\/over-the-air.de\/wp-content\/uploads\/2026\/10\/ota-update-beim-auto.webp 1200w, https:\/\/over-the-air.de\/wp-content\/uploads\/2026\/10\/ota-update-beim-auto-300x225.webp 300w, https:\/\/over-the-air.de\/wp-content\/uploads\/2026\/10\/ota-update-beim-auto-1024x768.webp 1024w, https:\/\/over-the-air.de\/wp-content\/uploads\/2026\/10\/ota-update-beim-auto-768x576.webp 768w, https:\/\/over-the-air.de\/wp-content\/uploads\/2026\/10\/ota-update-beim-auto-150x113.webp 150w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n<p class=\"wp-block-paragraph\">An <strong>OTA update in a car<\/strong> is quietly but fundamentally changing how vehicles are maintained, valued and traded. Instead of a visit to the workshop, the update runs over the mobile network: software is transferred wirelessly to the vehicle \u2013 and it also works in the other direction. Manufacturers can retrieve data directly from the car. For used car dealers and operational users in the vehicle trade, this has concrete consequences, especially when it comes to electric vehicles and battery health. This article explains what an OTA update means technically, which manufacturers use the technology and what new opportunities it opens up for the EV trade.    <\/p>\n\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>Table of contents<\/h2><nav><ul><li><a href=\"#was-ist-ein-ota-update-beim-auto\">What is an OTA update in a car?<\/a><\/li><li><a href=\"#wie-funktioniert-ein-ota-update-technisch\">How does an OTA update work technically?<\/a><\/li><li><a href=\"#welche-hersteller-nutzen-ota-updates\">Which manufacturers use OTA updates?<\/a><\/li><li><a href=\"#welche-daten-und-funktionen-werden-over-the-air-ubertragen\">Which data and functions are transferred over the air?<\/a><ul><li><a href=\"#software-updates-und-funktionsfreischaltungen\">Software updates and feature activations<\/a><\/li><li><a href=\"#datenabfragen-vom-fahrzeug-an-den-hersteller\">Data requests from the vehicle to the manufacturer<\/a><\/li><li><a href=\"#ota-und-batteriedaten-eine-neue-dimension-fur-den-ev-handel\">OTA and battery data: a new dimension for the EV trade<\/a><\/li><li><a href=\"#vor-und-nachteile-vom-ota-update-beim-auto-im-fahrzeughandel\">Pros and cons of OTA updates in cars for the vehicle trade<\/a><ul><li><a href=\"#vorteile\">Advantages:<\/a><\/li><li><a href=\"#herausforderungen\">Challenges:<\/a><\/li><\/ul><\/li><li><a href=\"#sicherheit-und-standards-un-r-156-und-iso-21434\">Security and standards: UN R156 and ISO 21434<\/a><\/li><\/ul><\/li><li><a href=\"#fazit\">Conclusion<\/a><\/li><li><a href=\"#faq\">FAQ<\/a><ul><li><a href=\"#faq-question-1779883879948\">What is an OTA update in a car?<\/a><\/li><li><a href=\"#faq-question-1779883890622\">Which manufacturers offer OTA updates?<\/a><\/li><li><a href=\"#faq-question-1779883903138\">Which data is transferred over the air?<\/a><\/li><li><a href=\"#faq-question-1779883914732\">Can the battery health be read over the air?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n<h2 id=\"was-ist-ein-ota-update-beim-auto\" class=\"wp-block-heading\">What is an OTA update in a car?<\/h2>\n\n<p class=\"wp-block-paragraph\">OTA stands for \u201cover the air\u201d and refers to wireless data transmission between the vehicle and the manufacturer. In concrete terms, an <strong>OTA update<\/strong> is transferred to the car via the mobile network or Wi-Fi without the vehicle having to be connected to a diagnostic device or taken to a workshop. What has been familiar from smartphones for years is now also finding its way into passenger cars.  <\/p>\n\n<p class=\"wp-block-paragraph\">What gets updated is not just simple applications, but also the operating system, control units and safety-relevant software. Depending on the model, a modern car contains several dozen control units \u2013 each of which is essentially a small computer. Their software can be specifically updated, corrected or extended via the vehicle&#8217;s internet connection.  <\/p>\n\n<div class=\"wp-block-group ota-cta-slim has-ast-global-color-1-background-color has-background is-content-justification-space-between is-layout-flex wp-container-core-group-is-layout-9976dc6a wp-block-group-is-layout-flex\" style=\"border-radius:12px;padding-top:20px;padding-right:28px;padding-bottom:20px;padding-left:28px\">\n<p class=\"wp-container-content-9cfa9a5a wp-block-paragraph\" style=\"font-size:16px;line-height:1.5\">Over the air, it is not only updates that reach the vehicle. Condition data can also be retrieved the same way. <\/p>\n\n\n\n<div style=\"background:#0E2A47;border-radius:16px;padding:26px 30px;display:flex;align-items:center;gap:16px;flex-wrap:wrap;\"><span style=\"display:inline-flex;align-items:center;gap:10px;font-weight:500;color:#ffffff;font-size:15px;\"><span style=\"width:34px;height:34px;border-radius:50%;background:#FBEADF;color:#FF5400;font-weight:700;display:inline-flex;align-items:center;justify-content:center;flex:0 0 34px;\">1<\/span>Register for free<\/span><span style=\"color:#FF5400;font-weight:700;\">\u2192<\/span><span style=\"display:inline-flex;align-items:center;gap:10px;font-weight:500;color:#ffffff;font-size:15px;\"><span style=\"width:34px;height:34px;border-radius:50%;background:#FBEADF;color:#FF5400;font-weight:700;display:inline-flex;align-items:center;justify-content:center;flex:0 0 34px;\">2<\/span>Enter VIN<\/span><span style=\"color:#FF5400;font-weight:700;\">\u2192<\/span><span style=\"display:inline-flex;align-items:center;gap:10px;font-weight:500;color:#ffffff;font-size:15px;\"><span style=\"width:34px;height:34px;border-radius:50%;background:#FBEADF;color:#FF5400;font-weight:700;display:inline-flex;align-items:center;justify-content:center;flex:0 0 34px;\">3<\/span>Get report<\/span><span style=\"margin:0 auto;\"><a href=\"https:\/\/autodataexperts.de\/over-the-air\" style=\"display:inline-block;background:#FF5400;color:#ffffff;text-decoration:none;font-weight:600;font-size:16px;padding:14px 30px;border-radius:9px;\" target=\"_blank\" rel=\"noopener\">Start Step 1<\/a><\/span><\/div>\n<\/div>\n\n<h2 id=\"wie-funktioniert-ein-ota-update-technisch\" class=\"wp-block-heading\">How does an OTA update work technically?<\/h2>\n\n<p class=\"wp-block-paragraph\">For an <strong>OTA update to work on the car side<\/strong>, three technical requirements must be met: a permanent or on-demand internet connection in the vehicle, a central control unit that distributes the update, and a secure transmission channel from the manufacturer. Most new vehicles today come with a built-in SIM card as standard and communicate via LTE or, increasingly, 5G. During longer stays at home, a Wi-Fi connection can also be used.  <\/p>\n\n<p class=\"wp-block-paragraph\">The typical process:<\/p>\n\n<ol style=\"margin-top:0;margin-bottom:0\" class=\"wp-block-list ada-highlight-box\">\n<li>The manufacturer provides an update on its server.<\/li>\n\n\n\n<li>The vehicle checks automatically or on request whether a new package is available.<\/li>\n\n\n\n<li>The update is downloaded, verified and installed \u2013 usually while the vehicle is parked.<\/li>\n\n\n\n<li>After successful installation, the vehicle is notified; in some cases the owner receives a confirmation.<\/li>\n<\/ol>\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\">Some updates take place automatically in the background, others have to be actively approved by the driver. Safety-relevant updates are usually installed without active consent, cosmetic or optional functions mostly only after confirmation. <\/p>\n\n<h2 id=\"welche-hersteller-nutzen-ota-updates\" class=\"wp-block-heading\">Which manufacturers use OTA updates?<\/h2>\n\n<p class=\"wp-block-paragraph\">Tesla is considered the pioneer of over-the-air updates in passenger cars \u2013 almost all major manufacturers have since followed suit, albeit with different scopes of functions. The following overview shows the status of OTA capability for the brands relevant in the German market: <\/p>\n\n<figure class=\"wp-block-table alignwide is-style-stripes\"><table class=\"has-white-background-color has-background has-fixed-layout\"><thead><tr><th>Manufacturer<\/th><th>OTA functions<\/th><th>Special feature<\/th><\/tr><\/thead><tbody><tr><td>Tesla<\/td><td>Full scope: operating system, control units, range, assistance systems<\/td><td>Longest experience, own platform architecture<\/td><\/tr><tr><td>BMW<\/td><td>Remote Software Upgrade for Connected Drive vehicles<\/td><td>Functions can be booked retrospectively<\/td><\/tr><tr><td>Mercedes-Benz<\/td><td>OTA via the MBUX platform<\/td><td>Focus on infotainment and assistance<\/td><\/tr><tr><td>Volkswagen Group (VW, Audi, Cupra, Seat, Skoda)<\/td><td>OTA updates for the ID family, Audi Q4 e-tron, Cupra\/Seat Born and Tavascan, Skoda Enyaq\/Elroq<\/td><td>Expanded since model year 2024<\/td><\/tr><tr><td>Mazda<\/td><td>Limited OTA functions for connected models<\/td><td>Focus on infotainment<\/td><\/tr><tr><td>Audi<\/td><td>\u201cFunctions on Demand\u201d: LED matrix lights, park assist, navigation<\/td><td>Retrospective activation for a fee<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<p class=\"wp-block-paragraph\">OTA capability depends heavily on the model year and the respective software architecture. Older models with a distributed control unit structure can often only be updated over the air to a limited extent \u2013 modern platforms with a central vehicle computer much more comprehensively. <\/p>\n\n<h2 id=\"welche-daten-und-funktionen-werden-over-the-air-ubertragen\" class=\"wp-block-heading\">Which data and functions are transferred over the air?<\/h2>\n\n<p class=\"wp-block-paragraph\">This is where a common misconception lies: <strong>An OTA update in a car does not necessarily just mean \u201csoftware is sent to the car\u201d.<\/strong> OTA describes the wireless connection \u2013 and data can flow in both directions via this connection.<\/p>\n\n<h3 id=\"software-updates-und-funktionsfreischaltungen\" class=\"wp-block-heading\">Software updates and feature activations<\/h3>\n\n<p class=\"wp-block-paragraph\">The following is typically transferred from the manufacturer to the vehicle:<\/p>\n\n<ul class=\"wp-block-list ada-highlight-box\">\n<li>Safety-critical software patches (e.g. for brake control, charging control)<\/li>\n\n\n\n<li>Improvements to the battery management system in electric cars<\/li>\n\n\n\n<li>New functions for infotainment, navigation and assistance systems<\/li>\n\n\n\n<li>Retrospective activation of paid extras (Functions on Demand)<\/li>\n\n\n\n<li>Corrections that previously would have required a recall to the workshop<\/li>\n<\/ul>\n\n<div style=\"height:16px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\">In electric vehicles, there is an additional special role: manufacturers use OTA updates to continuously optimise the charging strategy and service life of the battery. The consultancy McKinsey estimates the economic potential of such updates at around 260 euros of additional profit per vehicle, mainly through feature activations. <\/p>\n\n<h3 id=\"datenabfragen-vom-fahrzeug-an-den-hersteller\" class=\"wp-block-heading\">Data requests from the vehicle to the manufacturer<\/h3>\n\n<p class=\"wp-block-paragraph\">At least as important \u2013 and often underestimated in the vehicle trade \u2013 is the opposite direction: vehicles continuously send data to the manufacturers. This includes telemetry data, diagnostic values, charging and driving behaviour and, in electric cars, detailed information on the condition of the high-voltage battery. This data is held by the manufacturer and can be retrieved on request \u2013 provided the corresponding interfaces are open.  <\/p>\n\n<p class=\"wp-block-paragraph\">Until now, this required a vehicle to be connected to a diagnostic device on site. The OTA logic changes this: if data communication between the vehicle and the manufacturer is running anyway, the <a href=\"https:\/\/over-the-air.de\/en\/state-of-health\/soh-battery-explained\/\" data-type=\"post\" data-id=\"183\">SoH value of the battery<\/a> can in principle also be retrieved over the air \u2013 by entering the vehicle identification number (VIN), without a plug and without a workshop visit. <\/p>\n\n<h3 id=\"ota-und-batteriedaten-eine-neue-dimension-fur-den-ev-handel\" class=\"wp-block-heading\">OTA and battery data: a new dimension for the EV trade<\/h3>\n\n<p class=\"wp-block-paragraph\">This is exactly where OTA becomes relevant in practice for used car dealers, fleet managers and rental companies. The battery is the most valuable component of an electric car and largely determines range, residual value and resaleability. The <a href=\"https:\/\/www.dat.de\/restwert-elektroautos\/\" target=\"_blank\" rel=\"noopener\">Deutsche Automobil Treuhand (DAT)<\/a> has now officially included battery health \u2013 the <strong>State of Health<\/strong>, or <strong>SoH<\/strong> for short \u2013 in its valuation system for used electric vehicles.  <\/p>\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Analyses of large numbers of SoH measurements show that most EV batteries are more robust than often assumed. That is precisely why the individual SoH measurement is so valuable \u2013 it distinguishes the well-maintained vehicle from the outlier and makes the difference in the purchase price transparent. <\/p>\n<\/blockquote>\n\n<p class=\"wp-block-paragraph\">Until now, this required a vehicle to be connected to a diagnostic device on site. The OTA logic changes this: if data communication between the vehicle and the manufacturer is running anyway, the SoH value can in principle also be retrieved over the air \u2013 by entering the vehicle identification number (VIN), without a plug and without a workshop visit. autoDATAexperts has implemented exactly this approach with the <a href=\"https:\/\/autodataexperts.de\/over-the-air\" target=\"_blank\" rel=\"noopener\">SoH OverTheAir<\/a> tool: the VIN is entered, the SoH value comes directly from the manufacturer, and the dealer receives a report with battery health, WLTP range and mileage as a PDF. The tool currently supports selected models from Tesla, BMW, Mazda and the Volkswagen Group (VW, Audi, Cupra, Seat, Skoda). Further manufacturers and models are being added continuously.    <\/p>\n\n<h3 id=\"vor-und-nachteile-vom-ota-update-beim-auto-im-fahrzeughandel\" class=\"wp-block-heading\">Pros and cons of OTA updates in cars for the vehicle trade<\/h3>\n\n<p class=\"wp-block-paragraph\">From the perspective of a used car dealer or fleet operator, the most important points can be summarised as follows:<\/p>\n\n<h4 id=\"vorteile\" class=\"wp-block-heading\"><strong>Advantages:<\/strong><\/h4>\n\n<ul class=\"wp-block-list\">\n<li>Software stays up to date without a vehicle having to go to the workshop<\/li>\n\n\n\n<li>Security gaps are closed more quickly<\/li>\n\n\n\n<li>Functions can be activated retrospectively \u2013 this creates added value on resale<\/li>\n\n\n\n<li>Battery and diagnostic data can be retrieved remotely, which speeds up valuations<\/li>\n\n\n\n<li>Location and number of vehicles do not matter \u2013 even large fleets can be checked efficiently<\/li>\n<\/ul>\n\n<h4 id=\"herausforderungen\" class=\"wp-block-heading\"><strong>Challenges:<\/strong><\/h4>\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-a4cf818a wp-block-columns-is-layout-flex\" style=\"padding-top:var(--wp--preset--spacing--20);padding-right:0;padding-bottom:var(--wp--preset--spacing--20);padding-left:0\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.34%\">\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-0-color\"><strong>Data protection:<\/strong><\/mark> The data legally belongs to the owner; access must be clearly regulated<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.34%\">\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-0-color\"><strong>Transparency:<\/strong><\/mark> Not all manufacturers document what changes an update actually makes<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-0-color\"><strong>Heterogeneity:<\/strong><\/mark> Which functions are available over the air depends on brand, model and year of manufacture<\/p>\n<\/div>\n<\/div>\n\n<div style=\"height:14px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\"><strong>For everyday B2B business, this means:<\/strong> anyone who understands early on how OTA data flows work can streamline valuation processes, make purchasing decisions more confidently and provide arguments in customer communication that go beyond mileage and year of manufacture.<\/p>\n\n<h3 id=\"sicherheit-und-standards-un-r-156-und-iso-21434\" class=\"wp-block-heading\">Security and standards: UN R156 and ISO 21434<\/h3>\n\n<p class=\"wp-block-paragraph\">As OTA updates have grown in importance, so has the regulatory framework. Two standards are central: <strong><a href=\"https:\/\/unece.org\/transport\/documents\/2021\/03\/standards\/un-regulation-no-156-software-update-and-software-update\" target=\"_blank\" rel=\"noopener\">UN Regulation R156<\/a><\/strong> obliges manufacturers to operate a certified software update management system so that vehicles can be updated securely throughout their entire service life. <strong>ISO 21434<\/strong> additionally defines the requirements for cybersecurity processes in vehicle manufacturing \u2013 from development to operation.  <\/p>\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">For dealers, this means: updates that are installed over the air on new vehicles today are subject to a documented security standard. Manufacturers must prove that their update infrastructure is protected against manipulation. This strengthens confidence in OTA-based processes \u2013 including those that, like SoH data requests, run via the same secure infrastructure.  <\/p>\n<\/blockquote>\n\n<h2 id=\"fazit\" class=\"wp-block-heading\">Conclusion<\/h2>\n\n<p class=\"wp-block-paragraph\">An <strong>OTA update in a car<\/strong> is much more than the digital equivalent of a workshop visit. It is the technical basis for vehicles being permanently connected to their manufacturers \u2013 in both directions. This opens up a new field for the vehicle trade: data that used to be available only via a connected diagnostic device can now be retrieved remotely. In electric vehicles, battery health is the most prominent example. Tools such as SoH OverTheAir from autoDATAexperts show how this data flow can be used in practice for purchasing, fleet valuation or lease returns \u2013 without hardware, without a workshop, simply via a VIN query.    <\/p>\n\n<p class=\"wp-block-paragraph\">Would you like to better assess how battery data can be integrated into your purchasing or valuation process? autoDATAexperts supports dealers, fleets and rental companies in making efficient use of the SoH value via VIN query \u2013 a no-obligation introductory call will clarify within a few minutes whether this fits your use case. <\/p>\n\n<div style=\"background:#0E2A47;border-radius:16px;padding:26px 30px;color:#fff;\"><p style=\"margin:0 0 10px;color:#ff8a4d;font-weight:600;font-size:13px;\">OverTheAir by autoDATAexperts<\/p><p style=\"margin:0 0 12px;color:#ffffff;font-weight:700;font-size:23px;line-height:1.25;\">The battery health comes to you.<br>Not the other way around.<\/p><p style=\"margin:0 0 18px;color:#c9d8e8;font-size:16px;max-width:46ch;\">Enter the VIN, receive the SoH report \u2013 without the vehicle on site. \u20ac29 per query, no subscription. <\/p><a href=\"https:\/\/autodataexperts.de\/over-the-air\" style=\"display:inline-block;background:#FF5400;color:#ffffff;text-decoration:none;font-weight:600;font-size:16px;padding:12px 24px;border-radius:9px;\" target=\"_blank\" rel=\"noopener\">Register for free<\/a><\/div>\n\n<h2 id=\"faq\" class=\"wp-block-heading\">FAQ<\/h2>\n<div id=\"rank-math-faq\" class=\"rank-math-block\">\n<div class=\"rank-math-list \">\n<div id=\"faq-question-1779883879948\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">What is an OTA update in a car?<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>An OTA update (\u201cover the air\u201d) is a wireless update of the vehicle software via the mobile network or Wi-Fi. Instead of connecting the vehicle to a diagnostic device, the manufacturer sends the update directly to the car. This allows control units, the operating system, assistance functions and, increasingly, battery management to be updated \u2013 without a workshop visit.  <\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1779883890622\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">Which manufacturers offer OTA updates?<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Tesla established the technology early on. Today, BMW, Mercedes-Benz, Mazda and the entire Volkswagen Group (VW, Audi, Cupra, Seat, Skoda), among others, offer OTA updates \u2013 with different scopes of functions. Which updates are actually possible over the air depends on the model, year of manufacture and the vehicle&#8217;s software architecture.  <\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1779883903138\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">Which data is transferred over the air?<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Software updates are transferred from the manufacturer to the vehicle, but also telemetry and diagnostic data in the opposite direction. In electric cars, this includes charging behaviour, battery temperatures and data from the battery management system. Among other things, battery health (State of Health) can be derived from this data.  <\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1779883914732\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">Can the battery health be read over the air?<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Yes. If a manufacturer has released the corresponding interfaces, the SoH value of an electric car can be read directly from the manufacturer&#8217;s data via a VIN query \u2013 without the vehicle having to be physically inspected. Providers such as autoDATAexperts make this possible for used car dealers, fleets and rental companies, currently for selected models from Tesla, BMW, Mazda and the Volkswagen Group.  <\/p>\n\n<\/div>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>An OTA update in a car is quietly but fundamentally changing how vehicles are maintained, valued and traded. Instead of a visit to the workshop, the update runs over the mobile network: software is transferred wirelessly to the vehicle \u2013 and it also works in the other direction. Manufacturers can retrieve data directly from the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1253,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[66],"tags":[],"class_list":["post-1251","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-over-the-air"],"_links":{"self":[{"href":"https:\/\/over-the-air.de\/en\/wp-json\/wp\/v2\/posts\/1251","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/over-the-air.de\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/over-the-air.de\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/over-the-air.de\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/over-the-air.de\/en\/wp-json\/wp\/v2\/comments?post=1251"}],"version-history":[{"count":1,"href":"https:\/\/over-the-air.de\/en\/wp-json\/wp\/v2\/posts\/1251\/revisions"}],"predecessor-version":[{"id":1254,"href":"https:\/\/over-the-air.de\/en\/wp-json\/wp\/v2\/posts\/1251\/revisions\/1254"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/over-the-air.de\/en\/wp-json\/wp\/v2\/media\/1253"}],"wp:attachment":[{"href":"https:\/\/over-the-air.de\/en\/wp-json\/wp\/v2\/media?parent=1251"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/over-the-air.de\/en\/wp-json\/wp\/v2\/categories?post=1251"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/over-the-air.de\/en\/wp-json\/wp\/v2\/tags?post=1251"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}