Yes, you can and as long as you can drive the car safely then you can hire the instructor’s car for the test. However, there is no guarantee that you will pass the test. Some cut back on lessons to save money. But in the long run, after failing a few tests they realise that it actually costs more. So if you can afford it, try and take the recommended amount of lessons before your test as this way you will stand a better chance of passing it first time.