An electric car's battery usually outlives its warranty of 8 years or 160,000 km. The trap is Belgian: at 19,659 km driven a year on average, an electric car reaches both caps almost together, and everything after that happens without a safety net.
How long does an electric car really last?
Nobody knows for certain, and admitting it is more useful than a promise. The Belgian electric fleet is too young to have produced end-of-life statistics, and carmakers answer with ranges.
Benchmarks do exist. Deloitte, in the scoping study delivered to Car-Pass in October 2025, uses a battery lifespan of 10 to 15 years and a degradation of 1.8% a year under moderate conditions. Renault writes on its dedicated page that the first Zoes are "still on the road after 13 years", without publishing a survival rate.
The strongest figure comes from fleets. Geotab followed more than 22,700 electric vehicles across 21 models and published its results on 15 January 2026: 2.3% of capacity lost a year, which leaves 81.6% of capacity after eight years. The 2023 survey gave 1.8%. The two surveys do not use the same sample, so the 0.5-point rise stays indicative.
To judge these numbers you need a Belgian yardstick. According to AutoScout24 (2 October 2025), 39.7% of Belgian cars are more than 10 years old and 22% more than 15. An electric car does not have to last a century: it has to get past 10 years, then past 15.
The battery lasts 13 years in a straight line
At 2.3% a year, the straight line reaches 70% capacity after 13 years, the threshold most warranties use. That is my extrapolation, not a measurement: Geotab publishes no curve beyond eight years, and real degradation tends to slow down after the first years, which makes the straight line cautious.
Charging habits weigh more than age. Cars that draw less than 12% of their energy from fast chargers lose 1.5% a year, those above that threshold 2.5%. In a straight line, that is 20 years for the first group and 12 for the second.
Tesla supplies the other large dataset. In its 2023 impact report, the company says Model 3 and Model Y Long Range cars keep on average 85% of their capacity after 200,000 miles, close to 322,000 km, and 88% for the Model S and X. One caveat remains: ArenaEV notes that only versions with 2170 cells are counted, neither Standard Range nor 4680 cells, and that about 32% of the cars tracked fall below 80%.
The 160,000 km cap arrives in 8.1 years for a Belgian electric car
This is where lifespan gets twisted. Battery warranties run on two counters, 8 years or 160,000 km, whichever comes first, and the Belgian pace lines them up almost perfectly.
Car-Pass publishes in its 2025 annual report an average mileage of 14,172 km a year for all cars and 19,659 km for electric ones, which therefore drive 39% more. I applied those averages, plus two extreme profiles, to the two caps and to Geotab's straight line:
| Profile | Km per year | 160,000 km reached in | Km at 8 years | Km at 13 years (70% in a straight line) |
|---|---|---|---|---|
| Light driver | 10,000 | 16.0 years | 80,000 | 130,000 |
| Average Belgian car | 14,172 | 11.3 years | 113,376 | 184,236 |
| Average Belgian electric car | 19,659 | 8.1 years | 157,272 | 255,567 |
| Heavy driver | 30,000 | 5.3 years | 240,000 | 390,000 |
Author's calculations on Car-Pass 2025 averages and the Geotab study of January 2026. The right-hand column is an extrapolation, not a measurement.
For the average electric car, 157,272 km at eight years: the warranty expires on both fronts within a few weeks. For the heavy driver, mileage cuts the warranty at 5.3 years, while the battery probably has seven more ahead of it.
Between the end of the warranty, around 8 years, and the point where the battery would cross 70% capacity, around 13 years, there is a five-year zone that nobody covers. That is where resale is decided.
An example to fix ideas. A commuter who drives Brussels to Namur on the E411, about sixty kilometres each way, 220 days a year, covers 26,400 km a year: the 160,000 km arrive in 6.1 years. I set those assumptions myself, they come from no statistic, but they describe a common round trip between the capital and Wallonia.
Why does the warranty matter more than the battery?
Because the battery is not what breaks down first. The German motoring club ADAC, which attended more than 50,000 electric cars in 2025, published its breakdown statistics in April 2026: a four-year-old electric car has a breakdown rate of 6.5 per 1,000 vehicles, against 12.5 for a combustion car of the same age. The number one cause, across all models, remains the small 12 V battery, which explains nearly half of the call-outs.
The vehicle's electrical system, for its part, causes more breakdowns on electric cars than on combustion ones, says ADAC, without quantifying the gap.
So the objection holds on one point: yes, the traction battery will probably pass eight years. But a car is not a battery, and the rest of the vehicle ages at the same pace.
The textbook case is a German Tesla Model S P85+ that passed 1.7 million kilometres. According to Tom's Guide, its owner replaced 9 motors and 3 batteries, the first battery at around 470,000 km. The car still runs. It also went through twelve heavy components on the way.
What that means outside warranty is detailed in the article on battery replacement cost in Belgium.
Does an electric motor have an expiry date?
None published. Renault says the motor "can run for hundreds of thousands of kilometres", without a figure. The only indirect benchmark is the Model S mentioned above: 9 replacements in 1.7 million km, one every 190,000 km on average. One car, and an exceptionally high-mileage one, so treat it as an anecdote.
What is a 10-year-old electric car worth when you resell it in Belgium?
It sells on its state of health more than on its age, and the tool to prove it has just arrived. Since 1 January 2026, the Car-Pass shows the battery capacity of electric cars and of plug-in hybrids above 10 kWh, provided the seller agrees to share it. The European battery passport becomes mandatory on 18 February 2027.
The figures make the question pressing. The average age of a car when a Car-Pass is issued is 9.76 years, with 107,127 km on the clock, and electric cars made up only 4.7% of used cars registered in 2025. An electric car sold at that average age would, at its average pace, have 9.76 × 19,659 ≈ 191,900 km: 31,900 km beyond the warranty. That calculation is mine and mixes two averages, but it gives the order of magnitude buyers will meet in the coming years.
Four checks before buying an electric car older than eight years:
- The SoH on the Car-Pass, or an independent test: around €40 to €60 for a quick version, €90 to €150 for a full diagnostic according to New Mobility.
- The exact end date of the battery warranty, and the mileage left before the cap.
- The history of the 12 V battery and the electrical system, the first breakdown points.
- The share of fast charging, when the carmaker's app reports it.
The two-year legal guarantee from a professional seller still applies to used cars, traction battery included. The guide to used electric cars in Belgium covers the rest of the checks.
Frequently asked questions
What is the average lifespan of an electric car?
No official figure exists yet, because the fleet is young. The benchmarks converge: 10 to 15 years for the battery according to Deloitte (study for Car-Pass, October 2025), more than 13 years for the first Zoes still on the road according to Renault, and 1.7 million km for one exceptional Model S, at the cost of 9 motors and 3 batteries.
Do you have to replace an electric car battery after 10 years?
Not automatically. At 2.3% loss a year, a battery keeps about 77% of its capacity after 10 years, a straight-line calculation on the Geotab study. Replacement only comes up below the 70% threshold that most warranties use, or after a module failure.
Does fast charging shorten battery life?
A little. Geotab measures 1.5% loss a year for cars that draw less than 12% of their energy from fast chargers, against 2.5% above that. The gap is one point a year, or roughly 10 points of capacity over ten years.
What should you check before buying an electric car older than 8 years?
The SoH, the warranty end date and the repair history of the 12 V battery and the vehicle's electrical system. Since 1 January 2026, the Car-Pass can show the battery's capacity if the seller agrees to share it. An independent test costs around €40 to €60 in its quick version.
Le verdict de Christophe F.
The battery does not set the lifespan of a Belgian electric car, the warranty does. At 19,659 km a year, 160,000 km arrive at 8.1 years, and five years of probably healthy battery remain with no cover at all. Buy an electric car older than eight years on a proven SoH, never on its age, and keep a margin for the 12 V battery and the electrical system before dreaming of a million kilometres.
