7 EV Myths Debunked: What the Data Actually Shows

The truth: EVs have far fewer moving parts than petrol cars and skip oil changes, timing belts and exhaust repairs. But they are not maintenance-free, and pretending otherwise sets owners up for disappointment.

Data from Norway, the world's most mature EV market, shows EVs accumulating inspection faults at a higher rate than petrol cars as they age: roughly 30% of EVs show faults at the 10-year inspection versus about 16% for equivalent-age petrol cars.

The common items: tyres (EVs are heavier and torquier, so tyres wear faster), suspension components (same weight story), brake fluid changes, cabin filters, and the 12V auxiliary battery. Software updates and battery coolant checks are also periodic requirements.

The correct framing: EVs are lower maintenance, not zero maintenance, with annual servicing typically costing a fraction of a petrol car's. Budget for tyres honestly; they are the EV's consumable.

The truth: real-world fleet data shows modern EV batteries retaining roughly 90% of original capacity after 8 years, with degradation slow and predictable rather than sudden.

Battery management systems control temperature, charge rates and cell balancing precisely to stretch longevity, and the data across hundreds of thousands of vehicles backs it up: high-mileage EVs routinely keep the large majority of their range.

Every new EV sold in the UK carries a battery warranty, typically guaranteeing 70-80% capacity retention for around 8 years or a generous mileage cap. Real-world degradation usually runs well inside those thresholds, which is why capacity warranty claims are rare.

For used-EV buyers: battery health reports (from the manufacturer's app or third-party diagnostics) take the guesswork out. A 5-year-old EV with a verified healthy battery is a very different proposition from the myth's image of a dying appliance.

The truth: EVs are statistically far less likely to catch fire than petrol cars. The consistent international finding is roughly 25 fires per 100,000 EVs versus about 1,530 per 100,000 petrol and diesel vehicles.

EV fires make headlines precisely because they are rare and novel; petrol car fires are so routine they go unreported. A vehicle built around a tank of flammable liquid and a hot exhaust system was never the low-risk baseline people imagine.

The honest nuance: when lithium battery fires do occur they are harder to extinguish than petrol fires, which is why they get firefighting attention. Multiple protection layers (battery management, thermal barriers, automatic disconnection) are what make them so rare in the first place.

The truth: like every grid, the UK's carries substantial spare capacity overnight, which is exactly when most EVs charge, and the grid's renewable share keeps growing.

EV charging is also the most flexible large load a household owns. The car typically needs a few hours of charge and sits plugged in for longer; a smart charger on an off-peak EV tariff shifts the draw into the overnight trough automatically, and suppliers actively reward it because it flattens demand rather than spiking it. Smart charging is not a workaround; it is the design.

Grid investment continues for many reasons, but "the grid cannot handle EVs" treats charging as if it all happened at 6pm on a winter Tuesday. With even basic scheduling, it does not, and the tariff structure pays you to prove it.

The truth in the UK: this myth has real kernels (VED arrived, public rapid charging is dear) and an honest answer.

Count everything. Since April 2025, EVs pay standard-rate VED of about £195 a year, the same band as most petrol cars, so road tax roughly cancels out. Public rapid charging is genuinely expensive (and carries 20% VAT versus 5% at home), so a driver who only charges publicly shrinks the advantage.

But the typical UK EV charges at home: at 2026 cap rates that is roughly 6.5-9p per mile, and less on off-peak EV tariffs or solar (roughly 3-4p). A petrol car pays pump prices (around £1.45/litre as an editorial estimate) with fuel duty inside them, plus a heavier servicing schedule.

The myth survives by comparing the worst EV case (all public rapid charging) against an unstated petrol baseline. Compare like with like on our EV vs petrol page, and the home-charged EV wins on running costs comfortably; the full numbers are in our charging cost guide.

The truth: the UK's rapid-charging network now covers the motorway system and main routes, and most modern EVs carry roughly 250-370 miles of real-world range.

The arithmetic of a UK road trip: legs between major stops are rarely beyond a modern EV's range, and a 20-30 minute rapid charge while you grab a coffee restores a large share of it. Route planners (and the car's own navigation) handle charger locations automatically.

The deeper point: road trips are a small fraction of total driving. An EV charged at home covers the everyday entirely, at the cheapest rates available, and treats the occasional long run as a solvable logistics question rather than a reason to burn petrol all year.

The truth: early short-range EVs did depreciate hard, and that history powers the myth. Modern long-range EVs behave much more like ordinary cars on the used market.

What changed: ranges that handle real life, battery health transparency (verifiable state-of-health reports reduce buyer fear), and a maturing used-EV market with enough volume for prices to find their level.

UK-specific honesty: the market here absorbed real policy swings, the purchase grant ending in 2022 and standard VED arriving in April 2025, and used values adjusted through both. A buyer today faces a settled picture: no purchase subsidies, known road tax, strong salary-sacrifice flows feeding the future used market, and a running-cost case that stands on its own. Depreciation varies by model and brand far more than by drivetrain; research the specific car, not the category.