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Electric vehicles (EVs) are often seen as simpler and more reliable than petrol or diesel cars. With fewer moving parts and no exhaust system, many drivers assume an electric car will breeze through its MOT test.
While EVs do avoid some traditional MOT failure points, they still fail MOT tests for many of the same reasons as conventional vehicles. In fact, some electric car components introduce new issues that drivers don’t always expect.
Understanding the most common electric car MOT failures can help you prepare in advance and avoid unexpected repair costs.
What Actually Causes Electric Cars to Fail an MOT?
This is one of the most searched questions by EV owners. Although electric vehicles don’t undergo an emissions test, they can still fail an MOT for many of the same reasons as petrol and diesel cars.
The most common MOT failure areas include:
- Worn or damaged tyres
- Brake wear or corrosion
- Suspension problems
- Faulty lights
- Steering issues
- Windscreen damage
- Seatbelt defects
Why here? This naturally follows “What’s checked during an MOT.”
Do Electric Cars Need an MOT in the UK?
Yes. Electric cars must follow the same MOT rules as petrol or diesel vehicles.
If your EV is over three years old, it must pass an MOT test every year to remain legally roadworthy.
However, the test is slightly different because electric vehicles do not have certain components, such as:
- Exhaust systems
- Fuel systems
- Engine emissions
Instead, the focus shifts more toward safety systems, tyres, brakes, suspension, and electrical components.
If you’re unsure what gets inspected during an MOT, you can read our guide on what mechanics check during an MOT test.
Is Your Electric Car Ready for Its MOT?
Tyres, brakes, suspension, and lights are some of the most common reasons electric cars fail their MOT. A quick inspection before your test can prevent unexpected failures and costly repairs.
Most Common Electric Car MOT Failures
Despite having fewer mechanical parts, EVs still fail MOT tests regularly. The most common issues are related to wear and safety components rather than the electric drivetrain itself.
Top EV MOT Failure Reasons
| Failure Area | Why It Happens |
|---|---|
| Tyres | Electric cars are heavier and deliver instant torque |
| Suspension | Extra battery weight increases wear |
| Brakes | Corrosion from low usage due to regenerative braking |
| Lights | Faulty bulbs or misalignment |
| Steering | Worn components or tracking issues |
| Windscreen & Wipers | Damage or poor visibility |
These issues are very similar to standard vehicles, but EV characteristics can accelerate certain types of wear.
1. Tyres – A Major MOT Failure for Electric Cars
Tyres are one of the most common MOT failure points for electric vehicles.
Electric cars are typically heavier due to their battery packs, and they deliver instant torque when accelerating. This combination can cause tyres to wear out faster than drivers expect.
Need New Tyres Before Your EV MOT?
Tyres are one of the most common MOT failure points for electric vehicles. If your tread depth is close to the legal limit, replacing tyres before the test can save time and prevent a failed MOT.
Common tyre-related MOT failures include:
- Tread depth below the legal 1.6mm limit
- Uneven tyre wear
- Cracks or damage to the tyre sidewall
If your tyres are close to the limit, replacing them before your MOT can prevent a fail. You can easily check suitable options using the online tyre finder at GForce Tyres.
2.The Brake Surprise: Why EVs Can Still Fail
Many drivers assume electric vehicle brakes last forever because regenerative braking reduces wear. While brake pads often last longer, reduced use of the braking system can allow brake discs to develop corrosion.
If the braking performance is affected or excessive corrosion is found during the MOT inspection, the vehicle may fail.
Typical MOT brake failures include:
- Corroded brake discs
- Uneven brake performance
- Sticking calipers
- Worn brake pads
Occasionally using the brakes firmly during normal driving can help keep them in good condition.
3. Suspension Wear
Electric vehicles are heavier than many conventional cars because of the large battery pack.
This extra weight can place more stress on suspension components such as:
- Shock absorbers
- Springs
- Bushings
- Control arms
Suspension wear often appears gradually, which is why it’s commonly discovered during routine servicing or an MOT inspection.
If your car feels bouncy or unstable, it’s worth arranging a vehicle inspection or car service before the MOT.
4. Steering and Alignment Problems
Steering components are another frequent MOT failure point.
Issues include:
- Poor wheel alignment
- Worn steering joints
- Excessive play in steering components
EV tyres can wear unevenly if alignment is off, which may lead to both tyre and steering failures during the MOT test.
5. Lighting and Electrical Issues
All vehicle lights must work correctly for an MOT pass.
Common problems include:
- Faulty headlights or brake lights
- Indicator failures
- Misaligned headlights
- Electrical warning lights on the dashboard
Even though electric cars rely heavily on electronics, most MOT lighting failures are simple fixes.
6. Windscreen, Wipers and Visibility
Clear visibility is a critical safety requirement.
Your EV may fail the MOT if there are:
- Cracks in the windscreen within the driver’s view
- Faulty windscreen wipers
- Empty or faulty washer system
These are usually quick and inexpensive issues to fix before the test.
Can an Electric Car Fail an MOT for Battery Issues?
Many drivers believe an ageing battery automatically causes an MOT failure, but this isn’t usually the case.
A battery with reduced driving range will not normally fail an MOT. However, testers may record a failure if they identify:
- Damage to high-voltage components
- Insecure battery mounting
- Exposed electrical wiring
- Safety-related electrical faults
Warning Lights Matter More Than Many Drivers Realise
Modern electric cars rely heavily on electronic systems. If a warning light indicates a safety-related fault, it may result in an MOT failure.
Common examples include:
- ABS warning light
- Brake warning light
- Electronic Stability Control (ESC)
- Airbag warning light
- Power steering warning light
How to Reduce the Risk of an EV MOT Failure
Preparing your electric vehicle before the MOT can significantly increase the chances of passing the first time.
Here are a few simple checks you can do beforehand:
Quick EV MOT Preparation Checklist
- Check tyre tread depth and condition
- Ensure all lights are working
- Inspect windscreen for cracks
- Top up washer fluid
- Listen for unusual suspension noises
- Make sure no warning lights remain on the dashboard
Many drivers choose to combine these checks with routine car servicing so any issues can be fixed before the MOT test.
Are Electric Cars More Likely to Fail MOT Tests?
Electric cars are not necessarily more likely to fail, but they fail for slightly different reasons.
Instead of engine or emissions issues, EV failures tend to involve:
- Tyres
- Brakes
- Suspension
- Steering
- Lighting
These are all standard safety components that affect every vehicle on the road.
Electric Car MOT vs Petrol Car MOT
Although both vehicle types undergo the same roadworthiness inspection, there is one major difference.
| Electric Car | Petrol/Diesel Car |
|---|---|
| No emissions test | Emissions test required |
| Tyres checked | Tyres checked |
| Brakes checked | Brakes checked |
| Suspension checked | Suspension checked |
| Steering checked | Steering checked |
| Lights checked | Lights checked |
FAQs
Do electric cars have an emissions test during MOT?
No. Electric vehicles do not produce exhaust emissions, so that part of the MOT test does not apply.
Do electric cars need brake checks during an MOT?
Yes. Even though EVs use regenerative braking, traditional brakes must still work correctly to pass the MOT.
How often do electric cars need an MOT?
Like all vehicles in the UK, EVs require their first MOT after three years, then annually.
Are EV tyres different from normal tyres?
Many EVs use reinforced tyres designed to handle extra weight and instant torque. Using the correct tyres improves safety and efficiency.
What happens if my electric car fails its MOT?
If your EV fails the MOT, the certificate will list the defects. These must be repaired before the vehicle can pass a retest.
Related Car Maintenance Guides
Learn more about common car problems, maintenance tips, and how to keep your vehicle running safely.
How to Read Your MOT Certificate Correctly
What’s The Difference Between An MOT And A Service
MOT Fail Categories | Dangerous, Major, Minor Explained for UK Drivers
Final Thoughts
Electric cars eliminate many traditional engine problems, but they still require regular maintenance to pass an MOT.
Most EV failures come from tyres, brakes, suspension, or visibility issues rather than the electric motor itself.
Checking these components before your MOT can help you avoid unexpected failures and keep your vehicle safe on the road.
If your electric vehicle needs tyres, servicing, or a safety inspection before its MOT, the team at GForce Tyres can help ensure everything is ready for the test.
