Electric vehicles are often discussed in terms of range, charging speed, battery life, and environmental impact. But as EV adoption continues to expand, another question is becoming increasingly important for individual drivers, fleet operators, and commercial vehicle owners:
Are electric vehicles actually more reliable than conventional gasoline or diesel cars?
Recent roadside assistance data published by Germany’s automobile club ADAC provides an increasingly clear answer. According to the latest findings, newer electric vehicles are experiencing significantly fewer breakdowns than comparable internal combustion engine vehicles.
For the EV industry, this trend is important. Greater vehicle reliability not only reduces operating costs but also strengthens the business case for expanding EV charging infrastructure across residential, commercial, fleet, and public applications.
EV Reliability Is Improving Rapidly
ADAC handles millions of roadside assistance cases every year, giving the organization access to a large dataset covering vehicle failures across different brands, powertrains, and model years.
Based on the latest data, electric vehicles registered between 2020 and 2022 experienced approximately 4.2 breakdowns per 1,000 vehicles, while comparable internal combustion engine vehicles recorded around 10.4 breakdowns per 1,000 vehicles.
This means newer EVs showed considerably fewer roadside failures than gasoline and diesel vehicles from the same registration period.
The results are particularly significant because the number of electric vehicles on European roads has increased rapidly in recent years. As the sample size becomes larger, the industry is gaining a clearer picture of how EVs perform under real-world operating conditions.
Why Can Electric Vehicles Be More Reliable?
One of the key advantages of an electric drivetrain is mechanical simplicity.
Traditional combustion vehicles rely on a large number of moving and wear-sensitive components, including:
- Internal combustion engines
- Fuel injection systems
- Exhaust systems
- Multi-speed transmissions
- Engine oil systems
- Spark plugs
- Timing components
- Cooling and emission-control systems
Electric vehicles eliminate many of these mechanical systems.
An EV drivetrain typically contains fewer moving parts and requires less routine mechanical maintenance. There is no engine oil to replace, no exhaust system to maintain, and fewer components that can suffer from mechanical wear.
Over time, this simpler architecture can reduce the number of potential failure points within the vehicle.
For fleet operators in particular, fewer mechanical failures may translate into lower maintenance requirements, reduced vehicle downtime, and more predictable operating costs.
The 12-Volt Battery Remains a Major Failure Point
Interestingly, the most common roadside issue for electric vehicles is not usually the high-voltage traction battery.
It is the conventional 12-volt auxiliary battery.
According to the reported ADAC data, approximately half of EV roadside failures were associated with the 12V battery. Conventional vehicles experience a similar problem, with the auxiliary battery also accounting for a large proportion of breakdowns.
Although EVs use large high-voltage battery packs to power the drivetrain, a separate low-voltage battery is still commonly required to operate important vehicle systems such as:
- Electronic control units
- Door locks
- Lighting systems
- Vehicle communication systems
- Safety electronics
- Startup and control systems
If the 12V battery fails, the vehicle may be unable to initialize even when the main traction battery has sufficient energy.
This shows that EV reliability depends not only on the main battery or electric motor, but on the performance of the vehicle’s entire electrical architecture.
High-Voltage Batteries Are Not the Main Breakdown Concern
Battery degradation remains one of the most frequently discussed concerns among potential EV buyers.
However, roadside assistance statistics suggest that the main high-voltage battery pack is not responsible for most EV breakdowns.
Modern electric vehicle batteries are supported by increasingly sophisticated:
- Battery Management Systems (BMS)
- Thermal management systems
- Cell monitoring technologies
- Charging protection systems
- Intelligent power management software
These systems continuously monitor battery voltage, temperature, state of charge, charging current, and other operating conditions.
As battery technology continues to develop, high-voltage systems are becoming increasingly reliable across both passenger and commercial electric vehicles.
EVs Perform Well Across Multiple Failure Categories
Electric vehicles also tend to experience fewer problems in several traditional vehicle failure categories.
Combustion vehicles can suffer from problems involving engines, fuel delivery, ignition, exhaust systems, lubrication, or mechanical transmissions. Electric vehicles eliminate many of these components entirely.
Electrical systems and vehicle electronics can still fail, but improvements in vehicle control systems and power electronics are continuing to increase reliability.
The broader trend suggests that EV manufacturers are gradually improving not only battery performance but also the reliability of the complete electric drivetrain.
Tire Wear Is One Area That Still Requires Attention
The ADAC findings also highlight one category where electric vehicles may experience slightly more issues: tires.
EVs are often heavier than equivalent combustion-engine vehicles because of their battery packs. They can also generate high levels of instant torque.
Both factors can place additional loads on tires.
For this reason, EV manufacturers and tire suppliers are increasingly developing tire designs specifically optimized for electric vehicles.
These tires may focus on:
- Higher load capacity
- Lower rolling resistance
- Improved durability
- Reduced road noise
- Better torque handling
- Improved energy efficiency
As EV technology matures, tire design is expected to continue improving alongside battery, charging, and drivetrain technologies.
Reliability Matters Even More for Commercial EV Fleets
For individual drivers, a vehicle breakdown is inconvenient.
For a commercial fleet, downtime can directly affect revenue.
Electric buses, logistics vehicles, taxis, delivery fleets, and heavy-duty electric trucks often operate under demanding schedules. Reliability therefore becomes a critical factor when organizations evaluate the transition from internal combustion vehicles to electric fleets.
More reliable vehicles may provide several operational advantages:
Lower Maintenance Costs
Fewer mechanical components can reduce scheduled and unscheduled maintenance requirements.
Reduced Vehicle Downtime
Greater drivetrain reliability can help keep commercial vehicles operating for longer periods.
More Predictable Fleet Operations
Fleet managers can plan vehicle availability and charging schedules with greater confidence.
Lower Total Cost of Ownership
Over the vehicle lifecycle, reduced maintenance requirements may contribute to lower operating expenses.
However, reliable electric vehicles also require reliable charging infrastructure.
Reliable EVs Need Reliable Charging Infrastructure
As electric vehicles become more dependable, charging infrastructure becomes an increasingly important part of the overall EV experience.
For residential users, reliable home charging ensures that vehicles are ready for daily travel.
For commercial properties and public charging operators, stable charger availability directly affects customer experience.
For fleet operators, charging equipment becomes part of the operational infrastructure of the business.
A reliable EV charging system should therefore provide more than simply electrical power.
Modern charging infrastructure increasingly requires:
- Stable power conversion
- Intelligent charging management
- Real-time monitoring
- Remote diagnostics
- OCPP communication
- Load management
- Charging scheduling
- High equipment availability
- Safety protection
- Software updates
As EV fleets become larger, intelligent charger management will become increasingly important for maintaining reliable transportation operations.
What This Means for the Future of Electric Mobility
The reliability gap between electric and combustion vehicles may become even more important as EV adoption accelerates globally.
Early concerns about electric vehicle durability were understandable when the technology was relatively new and long-term operational data was limited.
Today, however, millions of EVs are operating in real-world conditions across Europe, Asia, North America, and other markets.
The growing volume of reliability data suggests that modern electric vehicles can already compete strongly with—or outperform—traditional combustion vehicles in terms of roadside reliability.
At the same time, improvements in batteries, power electronics, vehicle software, thermal management, and charging infrastructure are continuing to strengthen the entire electric mobility ecosystem.
Building Reliable Charging Infrastructure for a Growing EV Market
The transition to electric mobility depends on both reliable vehicles and reliable charging infrastructure.
ZILIX develops intelligent EV charging solutions for residential, commercial, fleet, public, and heavy-duty charging applications. Our product portfolio includes AC chargers, DC fast chargers, high-power charging systems, and customized OEM and ODM solutions for global partners.
With integrated hardware development, charging control technology, software platforms, and manufacturing capabilities, we help charging operators, distributors, EPC contractors, fleet operators, and other industry partners build scalable EV charging infrastructure.
As electric vehicles continue to become more reliable, convenient, and widely adopted, dependable charging infrastructure will play an increasingly important role in supporting the next stage of global electric mobility.
Looking for an EV charging solution for your market or project?
Contact the ZILIX team to discuss AC charging, DC fast charging, fleet charging, high-power charging, or customized OEM and ODM solutions.
