# Are Electric Cars Reliable?

By EV Charge Cables · Published 18 October 2026

**The short version**

Electric cars are generally reliable, with fewer mechanical failure points than petrol equivalents, though software faults and battery health require attention.

- Fewer moving parts means less routine mechanical maintenance
- Software glitches and OTA updates are a growing reliability category
- Battery gradual degradation is normal; check your manufacturer warranty

Electric cars are generally reliable, and many owners find they need less routine maintenance than a petrol or diesel equivalent. With fewer moving parts in the drivetrain, there is simply less to go wrong mechanically. That said, reliability does vary by brand and model, and software faults have become a growing category of issues as cars become more connected. For a broader look at EV ownership, browse our [guides](https://www.evchargecable.co.uk/blogs/guides).

| Component | Reliability vs petrol | What to watch |
| --- | --- | --- |
| Electric motor | Generally more reliable (fewer moving parts) | Bearing wear over very high mileages |
| Transmission | More reliable (single-speed, no clutch) | Little routine maintenance needed |
| Brakes | Often last longer (regenerative braking reduces wear) | Discs can corrode if the car sits unused for long periods |
| Traction battery | Durable, but gradually degrades over years | Check the manufacturer warranty; avoid frequent rapid charging if possible |
| 12V auxiliary battery | Similar to petrol cars | Still needs periodic replacement; a common cause of unexpected no-starts |
| Software / infotainment | Growing source of faults and recalls | Keep software updated via OTA; report glitches to the dealer promptly |
| Cooling system | Simpler than an ICE but still present | Battery thermal management fluid needs periodic checks |

### Do electric cars have fewer mechanical problems than petrol cars?

Yes, in most cases. An electric drivetrain has no engine oil, no exhaust system, no timing belt, no clutch, and no multi-speed gearbox. Each of those items is a potential failure point in a conventional car. Removing them means fewer service intervals and typically fewer mechanical breakdowns. Routine maintenance for most EVs comes down to tyres, brake fluid, windscreen wash, and the occasional cabin air filter. However, fewer mechanical parts does not mean zero maintenance, and some owners are surprised to find that cooling systems, suspension, and bodywork still need the same attention as any other car.

### Are software glitches a reliability problem in EVs?

Increasingly, yes. Modern electric cars are essentially computers on wheels, and software faults have become one of the most common categories of warranty claims and recalls across the industry. Issues can range from infotainment freezes and over-the-air update failures to more serious faults affecting charging or driver assistance systems. Most manufacturers push OTA updates to fix known problems, which is genuinely useful, but it also means the car's behaviour can change after an update in ways that are occasionally unwelcome. Keeping your car's software current and reporting any unusual behaviour to your dealer promptly is the best approach.

### How reliable is an EV battery over time?

The traction battery is the part most owners worry about, and it is worth understanding what to expect. All lithium-ion batteries lose a small amount of capacity over time as a result of charge and discharge cycles, and this is normal. The decline tends to be gradual rather than sudden, and most drivers notice it only over many years of ownership. Good battery management, which includes avoiding leaving the battery at very high or very low states of charge for extended periods, can help slow the process. Most manufacturers back the traction battery with a separate warranty that covers significant capacity loss; check the exact terms in your car's documentation, as the length and threshold vary by brand.

### Which electric cars are most reliable?

Reliability surveys from organisations such as What Car?, Which?, and Auto Express regularly rank EV brands and models, and some names consistently appear near the top. However, the rankings shift from year to year as new models arrive and as software matures, so rather than quote a specific position that may already be out of date, check the most recent published survey before you buy. It is also worth looking at owner forums for the specific model you are considering, as real-world long-term experience often surfaces issues that shorter-term surveys miss.

### Is public charging infrastructure reliable enough to depend on?

The public charging network in the UK has expanded significantly, but charger reliability remains a valid concern. Faults, out-of-order units, and network outages do occur, and a broken charger on a long journey can be frustrating. Planning your route with a secondary charger nearby and knowing the network's helpline number reduces the risk considerably. Carrying a [portable EV charger](https://www.evchargecable.co.uk/portable-ev-chargers) gives you a genuine safety net: if you arrive somewhere with no working rapid charger, you can top up slowly from a domestic socket overnight rather than being stranded.

### Does an EV need an MOT?

Yes. Once it is over three years old, an electric car requires an annual MOT, just like any other vehicle on UK roads. The test is adapted for EVs: there is no emissions check, but the examiner will check the battery, high-voltage cables, and warning systems alongside the usual checks on lights, brakes, tyres, and bodywork. Some EV owners are caught out by tyre wear, which can be higher than expected due to the immediate torque delivery and the extra weight of the battery pack. Check your tread depth regularly.

### Frequently asked questions

#### Are electric cars cheaper to maintain than petrol cars?

Generally yes, because there are fewer fluid changes and no exhaust or clutch to replace. Servicing costs tend to be lower on average, though this varies by brand. Tyres and brakes are still consumables, and some EV-specific repairs, particularly anything involving high-voltage systems, must be carried out by trained technicians which can be more expensive.

#### Can an electric car battery be repaired rather than replaced?

In many cases, yes. Battery packs are made up of individual cells and modules, and specialist repairers can often replace a faulty module rather than the whole pack. Main dealers are more likely to quote for a full replacement, so it is worth seeking independent specialist quotes if your battery has a fault that falls outside the warranty period.

#### How long do electric car batteries typically last?

Most batteries are designed to retain the majority of their original capacity for a significant number of years and miles. Degradation varies by model, climate, charging habits, and how often the car is rapid-charged. Many manufacturers warrant the battery against significant capacity loss for eight years or more; check your car's specific warranty documentation for the exact terms.

#### Do EVs have more software recalls than petrol cars?

Software-related recalls have become more common across the industry as cars gain more complex systems. EVs are not uniquely bad, but because so much of the vehicle's behaviour is software-controlled, a bug can affect many cars simultaneously and require an OTA fix or a dealer visit. Checking for outstanding recalls on the DVSA website is good practice for any car, electric or not.

#### Is brake reliability better in an electric car?

The hydraulic brake components tend to last longer in an EV because regenerative braking does much of the slowing work, reducing wear on the pads and discs. However, brake discs can develop surface corrosion if the car is used mainly for short trips at low speed where the friction brakes are rarely applied. An occasional spirited stop to clean the discs is no bad thing.

#### What reliability surveys should I check before buying an EV?

What Car? and Which? both publish annual reliability surveys based on owner reports, covering both overall brand reliability and EV-specific issues. Auto Express and JD Power also publish results. These are the most useful starting points. Always check the publication date, as rankings can change significantly from one year to the next as models and software mature.

Electric cars have a genuine reliability advantage at the mechanical level, but software, battery health, and infrastructure are all worth understanding before you buy. For more practical ownership advice, explore our [full guides library](https://www.evchargecable.co.uk/blogs/guides), and if you are not sure which charging cable fits your car, use our [portable charger guide](https://www.evchargecable.co.uk/portable-ev-chargers) to make sure you are covered wherever you charge.

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