Automatic cars are becoming increasingly popular across the UK, especially with the rise of hybrids and electric vehicles. But many drivers wonder: do cars with automatic transmissions fail MOTs more often than manuals, or is this just a myth?

The truth is more nuanced. Automatic transmissions themselves are not directly tested during an MOT, but the way these vehicles are driven and maintained can influence overall pass rates.

Are Automatic Transmissions Checked During an MOT?

An MOT test does not assess the internal condition of the gearbox—whether manual or automatic. Instead, the test focuses on safety, emissions, and roadworthiness.

However, testers do check:

• Warning lights (including transmission-related lights)
• Gear selection operation (where relevant)
• Vehicle movement and control
• Emissions and braking performance

If an automatic car displays a gearbox warning light, struggles to engage gears, or enters limp mode, it can fail the MOT immediately.

Why Automatic Cars May Appear to Fail More Often

Automatic cars often fail MOTs for indirect reasons, not because of the transmission itself.

1. Higher Weight and Complex Systems

Automatic vehicles are typically heavier than manuals. Extra weight puts more strain on:

• Brakes
• Suspension components
• Tyres

These areas are among the most common MOT failure points.

2. Urban Driving Habits

Many automatic cars are used mainly for short, stop-start journeys. This driving pattern increases wear on brakes and raises the risk of emissions-related failures, especially for diesel automatics.

3. Dashboard Warning Lights

Modern automatics rely heavily on electronics. Sensors linked to the gearbox, emissions, or engine management can trigger warning lights, leading to MOT failure even if the car drives normally.

Do Automatic Cars Actually Fail MOTs More Than Manuals?

There is no official DVSA data confirming that automatic cars fail MOTs more often than manual vehicles overall. What tends to happen is:

• Automatics are often newer and more complex
• They are more likely to flag faults electronically
• Repairs may be delayed due to higher servicing costs

These factors can create the impression that automatics perform worse at MOT time.

Checking a vehicle’s full MOT history on CheckMot.com can help identify whether failures are transmission-related or caused by general wear and tear.

Common MOT Failure Areas for Automatic Cars

Automatic vehicles most often fail MOTs due to:

• Brake wear
• Suspension faults
• Emissions failures
• Dashboard warning lights
• Tyre condition

None of these are unique to automatics—but driving style and vehicle design can increase risk.

How Automatic Car Owners Can Improve MOT Pass Rates

Service on Schedule

Automatic gearboxes require regular fluid changes, even if manufacturers claim they are “sealed for life”.

Address Warning Lights Early

Never assume a warning light is harmless—MOT testers won’t ignore it.

Take Longer Drives Occasionally

This helps emissions systems function properly, especially for diesel automatics.

Check MOT History in Advance

Previous advisories often predict future failures.

FAQs

Do automatic transmissions cause MOT failures?

No. The gearbox itself is not tested, but related faults or warning lights can cause failure.

Are automatics more expensive to fix after MOT failures?

Often yes, due to complex electronics and parts.

Do electric and hybrid automatics fail MOTs more often?

Not necessarily, but warning lights and brake corrosion can be more common.

How can I check if an automatic car has a poor MOT record?

Use CheckMot.com to review full MOT history before buying or testing.