The best electric cars with the longest battery life

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Anyone considering buying a used electric car often asks the same question: how good is the battery still? That is very understandable, as the battery is the most expensive component of an electric car. Fortunately, more and more real-world data shows that modern battery packs last much longer than was thought a few years ago.

Kia and Hyundai lead in battery capacity

A recent analysis of nearly 10,000 battery tests shows that most electric cars retain a surprisingly high amount of their original battery capacity after 100,000 kilometers. For some models, the loss is so small that you hardly notice it while driving.

It is striking that the Korean brands in particular perform excellently. The Kia e-Niro and Hyundai Kona Electric are among the absolute leaders, retaining on average more than 97 percent of their original battery capacity. The Kia EV6 also scores exceptionally well. That is no coincidence. These manufacturers have been investing heavily for years in battery technology, smart software, and efficient cooling systems, which reduce battery wear.

Other brands also show that electric cars are built to last. Tesla, Audi, BMW, Volvo, Polestar, Skoda, and Volkswagen all retain more than 90 percent of their battery capacity after 100,000 kilometers. This means that an electric car after years of use is often still perfectly suitable for daily commuting, vacations, and long trips.

Of course, every battery will lose some capacity over the years. That is just as normal as wear and tear on tires or brakes. Factors such as frequent fast charging, extremely high or low temperatures, and how a car is used all influence the rate of that wear. Nevertheless, real-world data shows that modern battery packs are much more robust than previously expected.

Battery condition is just as important as mileage

At Carvendo, we therefore believe that the condition of the battery is at least as important as the mileage. A car with 150,000 kilometers and a healthy battery can sometimes be a better purchase than a comparable one with lower mileage but a poorly maintained battery pack.

That is why we expect independent battery tests, such as the SOH certificate, to become increasingly standard when selling used electric cars. This way, a buyer knows exactly what state the battery is in, creating more transparency in the used car market.

Solid-state batteries are the future

Moreover, the development of battery technology is not standing still. Various car manufacturers are now working hard on the introduction of so-called solid-state batteries. Instead of a liquid electrolyte, this new generation of batteries uses a solid material. That may sound like a small technical change, but the consequences could be enormous.

Solid-state batteries promise a higher energy density, allowing cars to drive further with a smaller or lighter battery pack. In addition, they can be charged faster, are more resistant to aging, and the risk of overheating or fire is even lower than with current lithium-ion batteries.

Many experts also expect that these batteries will eventually have a significantly longer lifespan. While a modern electric car can often already drive several hundred thousand kilometers without issues, solid-state batteries could improve that even further in the future.

The first models with this new battery technology are expected in the coming years. Major manufacturers such as Toyota, Nissan, BMW, Mercedes-Benz, and Volkswagen are investing billions of euros in its development. Although it will likely take a few more years before this technology becomes widely available and affordable, it shows how quickly the electric car continues to evolve.

There is no longer any need to doubt electric cars

For consumers who want to buy a used electric car today, however, there is good news. The current generation of batteries is proving to be very reliable in practice. The fear that a battery will be 'dead' after a few years is being debunked by more and more real-world data. Modern electric cars usually retain more than 90 percent of their battery capacity after 100,000 kilometers and can often continue to serve without problems for many years after that.

Electric driving is therefore not only a sustainable choice, but increasingly a sensible long-term investment as well. Especially when you choose a well-maintained used car where the condition of the battery is transparent.