Even though approximately 7,000 breakdowns occur on U.K. roads daily, that figure might rise in following years due to the fact that a third of drivers declared their MOT reassures the roadworthiness of their cars. Also, one in three motorists aged 18-25 declared they never checked if their tires are properly inflated, while one in four haven't analyzed if their tires tread depth is within legal limits.But the truly worrying fact is that a whopping 20 percent of U.K. drivers don't know how to open the hood of their own vehicles. They don't even know where the lever that opens the bonnet is located inside the cabin. Maybe that's why one in six motorists over 30 years of age would ask their mum or dad for car-related help.Insurance provider Direct Line found out that a staggering 75 percent of 50 experienced drivers subjected to retake the standard U.K. driving test weren't able to pass. Don't think that minor faults were the main offenders. In fact, those who failed averaged three major driving faults. As some of you might know, only one major fault is enough to fail the standard U.K. driving test nowadays.Amongst the 50 experienced motorists subjected to the experiment, one comitted ten major faults, while another comitted 42 minor ones over the 45-minute driving test. In case you were wondering, the most common driving errors exhibited were speeding, hitting kerbs and failing to see pedestrians.