A third of motorists are clueless about their cars.
New research found 35% of drivers surveyed have never looked at their tyre pressure or tread and a further 35% don't know what ABS - anti-lock braking system - stands for.
And 9% of the driving population, equating to over 3.4 million people, haven't a clue when their next MOT is due, while one in 10 drivers admit they don't know anything about their car's safety.
The survey of 1,334 motorists was commissioned by Engie, an all-in-one smartphone app, which connects to a car's on-board computer to run live diagnostics, reporting back with a vehicle 'health check' as well as offering real-time quotes from nearby mechanics.
Gal Arahon, CMO of Engie, said: ''Engie was born out of a genuine need to arm motorists with essential information about their car. Not only will it keep them safer on the roads - alerting any malfunctions - but it will also level the playing field and create much needed transparency in the industry.
''Until now, mechanics have always had the upper hand when it comes to vehicle repairs which has left consumers vulnerable to overpricing and unnecessary work. Now drivers will be confident that what the garage is telling them is not only true but fairly priced.''