The overall pass rate for the car test has stayed depressingly @ between 46 - 49% since the 1970`s. Only about 1 in 5 canditates pass 1st time. Tip one: private practice is definitely helpful as long as whoever is accompanying you doesn`t give you wrong advice - if in doubt check with your ADI. Tip two: make sure you know the Highway Code rules - the Examiner will want to see you comply with them. Tip three: try to book a test early in the week - I won`t go into the reason for this, but it can make a difference. The DSA`s rule of thumb guide to the number of lessons is one for each year of your life, but it`s aptitude that counts. I remember a Fleet Air Arm jet pilot who was absolutely hopeless in a car! Best of luck.