How comes my insurance quotes are expensive now?

The cheapest quote 3 days ago on my Ford Fiesta 1.2 was £900, and today again I checked the quotes again for my car with the same exact details on the same comparison site few hours ago; it was £1400 as the cheapest. The company that provided me with the cheapest quote was exactly the same as today. Why did it become more expensive within 3 days?

Your first quote should still be good for 30 days

To make that much difference you have entered something different. You do not say how old you are.
Some people do not realise that passing your Driving test will increase your insurance as you will no longer have some one sat beside you all the time. Did you enter years driving instead of years NCB as that would work out at about 60 % NCB.
Did you give the same employment? Unemployed carries a higher cost for example.

Andy C

Because last week some young drivers like you crashed and their data has affected predictions of your likelihood of crashing.