eSIM in Cars: How Connected Car eSIMs Work and Their Benefits (2026)

Quick answer: a car eSIM is a SIM chip built into the car's telematics unit. The carmaker uses it for emergency calls, remote app features, navigation traffic data, in-car Wi-Fi and over-the-air updates. In the EU every new car type approved since 31 March 2018 must have eCall, which needs this kind of mobile connection. Some brands, such as BMW with its Personal eSIM, also let you add the car to your own phone plan. Most car eSIMs can't take a travel eSIM, so abroad you normally use your phone's travel eSIM through CarPlay, Android Auto or a hotspot.

What Are eSIM-Enabled Cars?

Connected cars are now the norm: Counterpoint Research found that about two-thirds of cars sold in Q3 2023 had embedded connectivity. eSIM-enabled cars, also called connected cars, have a SIM chip built into the vehicle instead of a removable SIM card, which keeps them online for safety, navigation and app features. This allows for always-on connectivity, giving drivers and passengers access to a wide range of online services.

McKinsey estimated in 2021 that 95% of new vehicles sold in 2030 will have at least basic connectivity, such as reading vehicle data and linking a smartphone to the infotainment system. Carmakers such as BMW, Mercedes-Benz and Tesla already build connectivity into their current models.

One of the most significant advantages of eSIM-enabled cars is their ability to maintain constant internet connectivity. This feature supports various applications such as real-time navigation, vehicle diagnostics, and entertainment streaming. Because the SIM is embedded, the carmaker can change or update the network profile remotely, without anyone swapping a card.

Moreover, eSIM technology ensures that drivers and passengers can enjoy the internet wherever they go. Always-on connectivity powers live map updates, music streaming, smart home controls and other in-car apps that make driving safer and more enjoyable. This level of access enhances the driving experience and makes everyday commutes more enjoyable and informed.

• Convenience: connected services are switched on through the carmaker's app, with no SIM card to buy or insert. With programmes like BMW Personal eSIM you can even add the car to your own phone plan in the My BMW app.
• Cost-Effectiveness: basic safety and app services are often included for a period with the car, and extras such as in-car Wi-Fi data are sold as optional subscriptions, so you only pay for what you use.
• Enhanced Security: The integration of eSIM technology in cars enhances security by reducing the risk of physical SIM card theft or tampering. The embedded nature of the eSIM makes it more challenging for unauthorized individuals to access or compromise the vehicle's connectivity services.
• IOT Capabilities: eSIMs pave the way for more sophisticated IoT functionalities, allowing vehicles to communicate with other connected devices. This can lead to advancements in automation, safety, and data sharing between vehicles, improving traffic management and overall road safety.

In summary, eSIM-enabled cars are revolutionizing how we connect with our vehicles and the digital world around us. By offering benefits like constant internet access, flexibility in choosing mobile network carriers, and improved security, eSIM technology represents a substantial leap forward in the automotive industry. As vehicles become increasingly tied to networks and digital services, embracing eSIM connectivity may soon become standard, enhancing the driving experience for everyone.

Network Compatibility and 5G Integration

Most connected cars today run on 4G/LTE, and newer models such as BMW's iX and i4 add 5G. Because 5G coverage still varies by country and region, car modems fall back to 4G where 5G isn't available.

Current Network Landscape:

- 5G deployment varies significantly by region

- Dual-network compatibility essential for uninterrupted service

Solutions in Practice:

Car eSIMs usually work abroad too, through roaming agreements arranged by the carmaker, so features like emergency calls and navigation keep working when you cross a border.

The Benefits Of eSIM-Enabled Cars

As technology continues to evolve, the automotive industry is not left behind. One of the cutting-edge advancements making waves is eSIM technology in vehicles. With a shift toward increased connectivity, eSIM-enabled cars offer a plethora of benefits that cater to both everyday drivers and businesses involved in fleet management and car rentals. This innovative solution empowers users with flexibility, efficiency, and enhanced functionality-making it an essential feature in modern automobiles. In this article, we will explore the advantages of eSIM technology across various dimensions, revealing how it transforms the driving experience.

Convenience and Flexibility

One of the standout features of eSIM technology in connected vehicles is the convenience and flexibility it offers. Because the SIM is embedded, network profiles can be changed remotely instead of swapping physical cards. This is particularly useful for fleet management and rental car companies, which can manage connections across regions and countries without handling separate SIM cards.

Moreover, eSIM technology enables multi-network connectivity, ensuring that connected automobiles maintain a consistent internet connection even in areas with subpar network coverage. This continuous connection is crucial for accessing emergency services, navigation systems, and other vital features that help enhance safety and convenience on the road.

Real-world example:

- BMW Personal eSIM: launched in the US on the iX and i4 with T-Mobile's Magenta Drive plan ($20 a month with AutoPay). The eSIM is linked to your BMW ID, not the car, so it can move to another BMW with the feature.

With BMW Personal eSIM, iX and i4 owners can add the car to their existing mobile plan, use the car's 5G antenna for an in-car Wi-Fi hotspot for up to ten devices, and make and receive calls on their own number without their phone in the car.

Store Several eSIMs Safely

Some newer cars have more than one SIM: one used by the carmaker for safety and telematics, and a second one, like BMW's Personal eSIM, that carries your own phone plan. This lets the car keep emergency and app services separate from your personal calls and data.

• Separate lines: the carmaker's services and your personal plan don't share the same subscription.
• Effortless management: personal eSIM plans are set up and changed in the carmaker's app.

Timely Notifications and Diagnostics

Another significant benefit of eSIM technology in cars is the ability to receive timely notifications and diagnostics directly from the vehicle. With a consistent internet connection, eSIM-enabled cars can communicate with manufacturers and service centers in real-time. This means drivers get real-time alerts for maintenance, software updates, and performance issues preventing costly breakdowns.

This proactive approach not only enhances driver safety but also contributes to the vehicle's longevity, significantly reducing the likelihood of breakdowns and costly repairs.

Cost Effective

eSIM technology can contribute to cost savings in various ways. For businesses with fleets, the ability to switch carriers based on the best pricing plans available in particular regions can lead to lower operational costs. Rental car companies, too, benefit greatly from eSIMs, offering their clients a seamless experience without incurring high roaming charges when customers travel internationally.

eSIMs also cut down on SIM production and shipping, lowering costs and reducing plastic waste.

Over-the-Air (OTA) Updates

One of the most significant advantages of eSIM technology is its capability for Over-the-Air (OTA) updates. With an active internet connection, cars can receive software and firmware updates automatically, ensuring that they are always equipped with the latest technology and features. This capability reduces the need for costly dealership visits for updates and repairs.

Moreover, OTA updates can include enhancements to safety features, multimedia systems, and connectivity options, allowing users to benefit from ongoing improvements throughout their vehicle's lifespan.

Fuel Management

Incorporating eSIM technology facilitates advanced fuel management systems. Connected vehicles can access real-time data regarding fuel consumption and efficiency, allowing drivers and fleet managers to make informed decisions about fuel usage and cost optimization.

This feature is essential for tracking performance and identifying any inefficiencies in driving habits or vehicle conditions. With better fuel management, users can expect to see improved fuel economy and reduced operational expenses.

Superior Safety Features

The implementation of eSIM technology enhances safety features in connected cars. Continuous connectivity allows for emergency assistance, stolen-vehicle tracking and instant contact with emergency services. In the EU, eCall has been mandatory in all new types of passenger cars and light vans approved since 31 March 2018: after a serious crash the car automatically calls 112 and sends its location.

With eSIM-enabled vehicles, drivers receive automatic crash notifications and can access roadside assistance quickly, creating a more secure driving experience. This connectivity ensures that help is just a tap away whenever needed.

Home Automation Integration

eSIM technology in cars also opens up new avenues for integration with home automation systems. Drivers can control lights, thermostat and security systems from the car, creating a seamless link between home and vehicle. This capability enhances the convenience of smart living by creating a seamless transition between home and vehicle.

For instance, users can pre-condition their cars before driving and have their home systems prepared for their arrival, making daily life more efficient and connected.

Can I use a travel eSIM in my car?

Usually not. A car's built-in eSIM is managed by the carmaker for its own services, and most cars don't let you download a consumer eSIM plan onto it. BMW's Personal eSIM is an exception, but it only works with the carmaker's partner networks.

When you drive abroad, the simple option is to put a travel eSIM on your phone and connect the phone to the car:

• Apple CarPlay or Android Auto: maps, music and messages run from your phone's data on the car screen.
• Phone hotspot: share your phone's travel eSIM data with the car or passengers' tablets.
• Rental cars: some rental companies sell in-car Wi-Fi as an extra; check the price against a travel eSIM for your phone.

BitJoy travel eSIMs work on your phone in 200+ destinations, and most plans support hotspot, so your phone can keep the car connected on a road trip.

Read more:

What is SM-DP+ Address? How It Works, Manual eSIM Setup Guide

EID Number Explained: How It Works and Where to Find It on Your Device

eSIM vs. Physical SIM: Which One Offers Better Convenience?

In conclusion, eSIM-enabled cars represent a significant advancement in automotive technology, providing users with an array of benefits from convenience and flexibility to enhanced safety and integration with other smart technologies. As more automobiles adopt this innovative solution, both individual drivers and businesses can reap the rewards of a more connected driving experience, ushering in a new era of modern transportation.