If you’re not sure of how many miles you will cover, give the best estimation you can, rather than just choosing a random number.  To get the best indication of how many miles a year you drive, take a look at the mileage recorded on your previous service or MOT certificates.  If you do not have these or you’re a new driver, think of the journeys you will make regularly and work out how many times you’re likely to make them in a year It’s worth taking the time to work this out because over or underestimating your mileage could increase your insurance costs