EXPERTS have revealed the hidden sign your car is making you ill as drivers reported hair loss and nosebleeds.
One motorist claimed she suffered "debilitating" pain and fatigue, which she believed to be connected to the state of her vehicle.
One driver shared her suspicions on Instagram, claiming that her car was riddled with invisible mould that was making her sick.
She claimed: "After driving it for 2.5 years, these are the symptoms I experienced: extreme fatigue, debilitating should, collarbone and neck pain, nosebleeds, nausea and hair loss.
"My husband experienced all of these symptoms except for the hair loss and shoulder/neck pain.
"I’ve never had nosebleeds in my entire life but suddenly had red-tinged tissue after blowing my nose many times."
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She also alleged that her husband had experienced many of the same symptoms, only for them to disappear a few months after selling up.
Specialists from have now shared one of the major red flags that could suggest that your car is behind your health issues.
With almost half of all Brits suffering from hayfever, it could be hard to tell the difference between a seasonal allergy and a more sinister problem.
If your symptoms, such as itchy eyes, coughing and even trouble breathing, continue beyond your normal allergy window, it might be worth checking your car out.
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Fortunately, there are a couple of tests you can use to see if your vehicle really is the root cause.
The most obvious is to make a visual inspection and look for any visible mould.
However, one vital area to check which many might miss out is the cabin air filter.
This, as the name suggests, is what all the air sucked into the car by the air con system passes through.
The filter can easily become damp in the winter months and if any mould develops on it, each breath you take could be contributing to your illness.
It is usually found just behind the glovebox and should be changed once a year at least.
Making the switch only takes a screwdriver and a spare ten minutes, with a replacement filter clocking in at about £10.
If that doesn't work, try airing the car out and allow fresh air to circulate.
Then, if you find that your symptoms subside, it suggests there is something contaminating the air in your motor.
At that point, it's best to do a deep clean, paying particular attention to any upholstery, to try and sweep out whatever is polluting the cabin.
If symptoms continue after that, you can always take your vehicle in to be inspected at a local garage.
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It would also be advisable to consult a GP to see if they can determine what is making you unwell.
The warning comes after a mum shared her terror over a £4.99 baby item that burned her kid's car seat.