Should We Have Built-In Breathalysers in Every Car?

Imagine a safety feature that could help prevent impaired drivers from getting behind the wheel. Would you support it?

The idea of fitting breathalysers, often referred to as alcohol interlocks, into vehicles has been debated for many years. Supporters argue that the technology could reduce drink-driving incidents and save lives, while critics question whether such measures should apply to all motorists.

So, should breathalysers become a standard feature in every vehicle?

What Is an Alcohol Interlock?

An alcohol interlock is a device connected to a vehicle’s ignition system. Before starting the vehicle, the driver must provide a breath sample. If the alcohol reading exceeds a predetermined limit, the vehicle will not start.

Some systems may also require additional breath samples during a journey to ensure continued compliance.

Alcohol interlocks are already used in various countries as part of rehabilitation programmes for convicted drink-driving offenders, helping to reduce repeat offences while allowing monitored drivers to remain mobile.

Why Are Breathalysers Being Discussed?

Drink driving remains one of the most serious road safety issues worldwide. Alcohol impairs:

  • Reaction times
  • Judgement
  • Coordination
  • Concentration
  • Hazard perception

Even small amounts of alcohol can affect a driver’s ability to respond quickly and make safe decisions behind the wheel.

Because of these risks, many road safety campaigners believe that technologies capable of preventing impaired driving should be explored further.

The Consequences of Drink Driving

Driving while over the legal alcohol limit can have severe consequences.

In the UK, penalties can include:

  • A driving ban
  • Significant financial penalties
  • A criminal conviction
  • Increased insurance premiums
  • Potential imprisonment in serious cases

Beyond legal consequences, drink driving can result in life-changing injuries or fatalities for drivers, passengers, pedestrians, and other road users.

Potential Benefits of Built-In Breathalysers

Supporters of mandatory alcohol interlocks often point to several possible advantages:

Improved Road Safety

Preventing impaired drivers from starting their vehicles could reduce the number of alcohol-related collisions.

Reduced Repeat Offending

Alcohol interlocks have been used successfully in some jurisdictions to help reduce repeat drink-driving offences among convicted motorists.

Increased Public Awareness

Widespread adoption of the technology could reinforce the message that drinking and driving should never be combined.

Potential Concerns

While the technology offers potential benefits, there are also concerns that need to be considered.

Cost

Installing and maintaining alcohol interlock systems would add to vehicle manufacturing costs, which could ultimately be passed on to consumers.

Practicality

Questions remain around reliability, maintenance requirements, and how such systems would function in everyday situations.

Public Acceptance

Some motorists may view mandatory breathalysers as an unnecessary inconvenience, particularly those who never drink alcohol before driving.

The Most Effective Solution Remains Simple

While technology may help reduce the number of impaired drivers on the road, the safest approach remains straightforward:

If you’re planning to drive, don’t drink alcohol.

There is no technology more effective than making responsible decisions before getting behind the wheel.

Whether or not breathalysers become more widely adopted in future vehicles, road safety depends on drivers making sensible choices and understanding the risks associated with drink driving.

For more information on dangerous driving habits to break, we’ve got all the details here.

A Debate Likely to Continue

As vehicle safety technology continues to evolve, discussions around alcohol interlocks and other preventative systems are likely to continue.

Supporters believe they could save lives and reduce drink-driving incidents, while others question whether such measures should apply universally.

Whatever your view, the goal remains the same: making roads safer for everyone.


For more advice on vehicle ownership, maintenance, and road safety, visit our maintenance guidance hub.

You may also find this guide useful:

If you’re curious to find out what your vehicle is worth, head over to our free online valuation tool and find out in seconds!