Cars have evolved dramatically over the past decade. Features that were once found only on premium models, such as driver assistance systems, electronic parking brakes and advanced onboard diagnostics, are now common across many vehicles. As technology has evolved, so has the MOT.
Modern vehicle MOT testing still focuses on roadworthiness and safety, but inspectors now assess increasingly sophisticated systems alongside traditional mechanical components. Understanding these changes can help you prepare for your next MOT and recognise when specialist diagnostic equipment may be needed. If you’re due to book an MOT in Bromley , choosing an experienced garage helps ensure your vehicle is inspected correctly.
Modern vehicles include more electronic safety systems than ever, making routine maintenance an important part of preparing for your MOT.
How Has MOT Testing Changed for Modern Vehicles?
The purpose of the MOT has remained the same: to check that vehicles meet the minimum legal roadworthiness standards set by the Driver and Vehicle Standards Agency (DVSA). However, the way many checks are carried out has evolved alongside vehicle technology.
Modern vehicles contain more electronic systems, sensors and safety features than older models. While many traditional inspections remain unchanged, testers must also check electronic warning systems as part of the prescribed MOT procedures, rather than relying on manufacturer diagnostic equipment.
Which Modern Vehicle Technologies Affect MOT Testing?
Several technologies now influence modern car MOT requirements. Although not every electronic feature is inspected directly, faults affecting safety or legally required systems may lead to a failure.
Advanced Driver Assistance Systems (ADAS)
Many newer vehicles are equipped with Advanced Driver Assistance Systems (ADAS), including lane departure warning, automatic emergency braking and traffic sign recognition.
The MOT does not currently test whether every ADAS feature operates correctly. However, components linked to mandatory safety systems or warning lights may still affect the result. For example, replacing a windscreen on a vehicle fitted with a forward-facing camera may require recalibration. If the camera is misaligned, safety systems such as lane departure warning or automatic emergency braking may not operate as intended.
Onboard Diagnostics
Most modern vehicles constantly monitor their own performance through onboard diagnostics (OBD).
Dashboard warning lights can highlight faults affecting emissions, braking, airbags or electronic stability systems. During the MOT, testers check relevant warning lights and record any issues that show systems are not functioning correctly.
Our guide explaining MOT rule changes provides more detail on how inspection requirements have developed over time.
Electronic Braking Systems
Many vehicles now use electronic parking brakes instead of traditional handbrakes. Although the technology differs from traditional mechanical handbrakes, the inspection still focuses on whether the braking system operates safely and meets the required performance standards.
Do Electric and Hybrid Vehicles Have Different MOT Requirements?
Modern electric and hybrid vehicles still require an MOT once they reach the appropriate testing age.
Because they have fewer conventional engine components, some traditional checks are less relevant. However, tyres, suspension, steering, brakes, lights, seatbelts and structural condition remain just as important.
Electric vehicles also contain high-voltage systems. While these are not subject to the same routine inspections as other MOT items, testers carry out any relevant visual checks required under current DVSA testing procedures. Specially trained technicians may be needed if repairs are identified outside the scope of the MOT itself.
How Do Warning Lights Affect Modern Vehicle MOT Testing?
Electronic warning lights play a much bigger role in MOT testing technology than they did on older vehicles. Warning lights relating to airbags, ABS, electronic stability control or engine management may result in an MOT failure if they indicate a fault with systems covered by the inspection.
Ignoring a warning light can also allow a small problem to develop into a more expensive repair. Addressing faults before your MOT often makes the testing process more straightforward.
Can Garages Diagnose Problems Before an MOT?
Yes. Many garages offer pre-MOT inspections or diagnostic checks that help identify faults before the official test. Diagnostic testing may reveal issues that are not immediately obvious during everyday driving, particularly electrical or emissions-related faults. Identifying these early gives you time to arrange repairs before your MOT appointment.
If you’re unsure whether your vehicle is ready, our guide on vehicle compliance checks before an MOT explains several practical checks you can carry out yourself.
What Should Drivers Do Before Booking an MOT?
Modern vehicles benefit from a little preparation before testing, particularly because electronic systems and dashboard warning lights now play a greater role in MOT assessments. Simple checks include:
- Inspect tyres for tread depth and damage.
- Check that all exterior lights are working.
- Top up screen wash and inspect wiper blades.
- Look for any dashboard warning lights.
- Ensure number plates are clean and readable.
- Arrange repairs if you notice unusual noises or handling problems.
If you own a newer vehicle, it’s also worth understanding how new cars change MOT requirements , particularly if it’s approaching its first MOT.
Keeping Up With Changing Vehicle Technology
As modern vehicle technology continues to develop, MOT testing is likely to evolve alongside it as new safety systems become standard. Although inspections now include more electronic checks, the overall aim remains the same: ensuring vehicles meet the minimum legal safety standards before returning to the road.
Preparing your vehicle, responding to warning lights and keeping up with routine maintenance can all help reduce unexpected problems during your MOT. If your vehicle is due for testing, contact Bromley Vehicle Test Centre to arrange an inspection or book your MOT.
Frequently Asked Questions
Can ADAS faults fail an MOT?
ADAS features are not all tested individually during an MOT. However, warning lights or faults affecting safety systems covered by the inspection may result in a failure.
Are electric vehicles tested differently during an MOT?
Electric vehicles follow the same general MOT framework as petrol and diesel vehicles, although some engine-related checks do not apply. Safety-critical components such as tyres, brakes, steering and lights are still inspected.
Can diagnostic checks identify MOT failures?
Diagnostic checks can identify many electronic faults before an MOT, particularly those affecting warning lights or emissions systems. However, they do not replace the official MOT inspection.
Will an illuminated dashboard warning light fail an MOT?
It depends on which system is affected. Warning lights for systems such as airbags, ABS, electronic stability control or engine management may result in a failure if they indicate a relevant fault.
Do new cars need an MOT?
Most new cars require their first MOT when they are three years old, unless they fall into a category with different testing requirements.