Claimed EV Range vs Real-World Range: Why Are the Numbers Different?
An electric car promises 500 kilometres of range. You take it onto the road, drive normally, use the air conditioner and the battery runs low much earlier. So, was the claimed number fake? Not necessarily. The advertised range is usually measured under a standard test. Real world range depends on traffic, speed, weather, driving style and several other things that a laboratory cannot perfectly recreate. That is why the number in the brochure should be treated as a comparison figure, not a promise that every owner will travel exactly that far.
What Does Claimed Range Actually Mean?
Claimed range is the distance an EV achieves during a controlled testing procedure. The vehicle follows a fixed driving cycle with planned speeds, acceleration, braking and test conditions. This gives every manufacturer a common method for measuring and comparing vehicles. In India, you will often see manufacturers promote an ARAI certified range. ARAI is one of the authorised organisations involved in vehicle testing and certification, including electric vehicles. Other markets may use testing systems such as WLTP or EPA, and the final range figure can differ depending on the procedure used. These tests are useful because they allow two vehicles to be judged under similar conditions. The problem begins when buyers expect the test number to appear exactly the same during everyday driving.
Why Does Real-World Range Change?
An EV does not use the same amount of energy every minute. Just like a petrol car gives different mileage in traffic and on the highway, an electric vehicle’s efficiency changes with the situation.
1. Driving Speed
Higher speed usually means the motor needs more energy, mainly because the vehicle has to push against greater air resistance. This is why an EV may show impressive efficiency during relaxed city driving but lose range more quickly on a fast highway journey.
2. Sudden Acceleration
Electric vehicles can accelerate quickly, and yes, that instant pull can be fun. But repeatedly pressing the accelerator hard draws more power from the battery. Smooth acceleration usually helps the vehicle travel farther.
3. Air Conditioning and Heating
The cabin does not cool or heat itself for free. Air conditioning and heating use electricity from the same battery that powers the motor. Extreme outside temperatures can also affect battery performance, while extra energy may be needed to keep the cabin and battery within a suitable temperature range. Official US energy guidance similarly notes that very hot or cold conditions can reduce EV range.
4. Hills, Passengers and Luggage
Driving uphill takes more energy than travelling on a flat road. The same is true when the vehicle is carrying several passengers or heavy luggage. The motor simply has more weight to move.
5. Tyre Pressure
Underinflated tyres create more rolling resistance, which means the vehicle has to work harder to keep moving. It may sound like a small detail, but regularly checking tyre pressure can help both efficiency and tyre life.
Why Can an EV Perform Better in City Traffic?
This may sound strange, especially if you are used to petrol cars. Petrol vehicles often give poor mileage in stop-and-go traffic. An EV can sometimes handle urban driving more efficiently because the motor works well at lower speeds and regenerative braking can recover part of the energy when the vehicle slows down. That recovered energy goes back towards the battery instead of all of it being lost as heat through the brakes. It does not fully recharge the battery, of course. It simply recovers some energy that would otherwise have been wasted.
Can You Trust the Range Shown on the Dashboard?
Yes, but treat it as a live estimate, not a fixed guarantee. The vehicle looks at factors such as recent energy use, battery charge and driving behaviour to estimate how far you may be able to travel. If you have been driving gently in the city, the number may rise. Start driving quickly on a highway with the AC running, and it may fall faster than expected. This is why some drivers call it the “guess-o-meter.” That name is slightly unfair because the system is using real data but it is still making a prediction about conditions that can change.
Does Battery Age Reduce Range?
Yes, an EV battery can gradually lose some usable capacity as it ages. That does not mean the battery suddenly becomes useless after a few years. Degradation is usually gradual and depends on factors such as battery chemistry, temperature, charging habits and how the vehicle is used. Before buying, check the battery warranty and read the conditions carefully. The warranty period, kilometre limit and minimum retained capacity can differ between manufacturers.
How Much Range Do You Actually Need?
Do not choose an EV only because it has the biggest number in the advertisement. Start with your real routine. How far do you normally drive in a day? Can you charge at home? Do you regularly travel on highways? Is public charging available on those routes? If your daily travel is relatively short and you can charge overnight, you may not need the longest range model available. On the other hand, frequent highway travellers should pay closer attention to real-world road tests, charging speed and charger availability not only the claimed range.
What Should You Check Before Buying?
1. Real-world reviews: Look for tests performed in weather and road conditions similar to yours.
2. City and highway efficiency: One vehicle may perform better in city traffic while another is more efficient at higher speeds.
3. Battery capacity: Compare usable battery capacity, not only the advertised range.
4. Charging speed: A slightly shorter-range EV with faster charging may suit long journeys better.
5. Charging access: Check home, workplace and public charging options before purchasing.
6. Comfortable buffer: Do not plan regular journeys that require reaching the destination with almost zero battery remaining.
