As an experienced intructor of many years who has sat on numerous practical driving tests with dsa examiners and various learner drivers, I can fully say that there is no way anyone can fully guarantee you will pass the driving test, if there was, that person would be very rich!
If you search the internet, you will see a lot of organisations offering courses or driving lessons with a guarantee you will pass the practical car test. So far I've not seen anyone of these companies offering a money back policy, many of them offer free further attemps on driving tests or additional tuition at no cost to the learner, so how are they able to offer these guarantees?
First of all let me say that non of these schemes are cheap, the minimum I've seen charged for these intensive driving courses is £900, and you always need to fully read their terms and conditions to know what their criteria are for enrolling as well as how the guarantee scheme operates.
The way these driving schools work is that they charge a flat fee for course which is run over a week or so (so you need to take time off work or studies), you would then be given the base number of driving lessons say 20 hours (which because you have so much done within that 5 days including a lot of repetition) should have you cover everything you need for the dsa practical test. Majority of people will make enough progress on these intensive courses to be able to attempt the driving test with a high chance of passing because the information is fresh in your mind and you've been practising the skills recently. If you charge £25 per lesson, having only taken 20 lessons, with £62 for a test, they've cleared £338 in extra profit (£25 is a high lesson price in the first place). Now if you don't pass your test on the first attempt, you will need to at least wait 10 days before your next attempt, your money is already banked and gaining interest, you'll have to take some more time off work and rebook yourself in at a time suitable for both of you and then depending on the guranteed scheme operating, pay for tuition and have a free re-test or take free additional tuition and test.
Now I'm not saying you should not use a school offering a guaranteed driving test pass, I'm just saying that they don't have any driving test secrets to offer you as a learner driver, and are just using statistics to give themselves a good way of earning money from provisional licence holders, because they won't be doing it if it was not profitable.
So don't think you are getting a good deal, apart from the fact that you might get a full driving licence quickly, there is no guarantee that you will be a safer driver if you pass your driving test this way, and if you don't start to drive immediately, you could infact be a danger to yourself and other road users if you take to the roads after a copule of years break.
Pass that driving test
If you are not taking one of those crash driving courses with a guarantee, here is some valuable information for you.
There are no driving test secrets or dsa examiner insider information out there. I know of at least one website selling what it claims to be secrets to passing the UK driving test, because the information is less than the cost of a driving lesson, many people are tempted to buy these ebooks only to find out it is a collection on information that is free available from the internet, or common sense.
If you really need information that would guarantee you pass the test, then why not buy the DSA DVD Prepare for your Practical Driving Test, it also costs less than an hours driving lesson, but because it is made by the people who actually conduct the practical test here in the UK, it is the official guide for any learner driver, and if there are any test secrets, then you will find them in this DVD (I recommend this product for anyone learning to drive with parents or friends).
Important! If you are not learning to drive with an instructor, it is important that BOTH you and the person teaching you to drive read The DSA official test guide, this book will greatly increase your chance of passing the driving test without spending too much money on lessons.
Failed the driving test, don't give up.
Driving Test Maneuvers.