A look into your credit history by the insurer could affect you if you need to pay for your car insurance cover every month in instalments rather than in one go.
If your track record of repaying borrowed money is poor, and your credit history reflects this, then you might not be able to get cover or be offered a pay monthly option.
If you are offered a pay monthly option, then your premiums might be increased. If you can, consider paying for your car insurance in one go.