Faults that flash up on tyre pressure monitoring systems (TPMS) could see millions of cars in the UK fail the MOT test .
The technology comes fitted in most modern motors, flagging up when tyre pressure dips below the level it should be at through a warning light on the dashboard to help drivers pre-empt punctures and even blowouts.
But this could lead to millions of failed MOTs due to nothing more problematic than an underinflated tyre .
TyreSafe is urging motorists to make sure their car's tyres are correctly inflated before the initial test date, as any car that has a warning light showing on the dashboard fails its MOT under current legislation.
It means drivers could unnecessarily be forking out even more money for another MOT.
The inclusion of TPMS technology in new model vehicles has only been mandated in Europe since 2012 and on all new cars since 2014, despite the fact it has already been around for several decades.
TyreSafe says this gradual introduction to the market has led to a lack of understanding.
It claims a large number of motorists are unaware of how the systems work and need to be maintained, while others just see them as an expensive luxury rather than the crucial safety feature they are.
The organisation recommends having a TPMS serviced occasionally, even if it appears to be functioning correctly, to ensure it continues to operate properly and reduce the likelihood of an MOT failure.
TPMS sensors are designed to last for many years and miles, yet a sensor's internal battery will eventually run out, while they can become faulty or fail completely as a result of weather damage, corrosion or accidental damage.
Replacing the valve cap and core components every time a tyre is changed is one way to ensure a sensor remains in a good condition.
Copyright Press Association 2015