Hi Karen, phone the dealers & explain what you have said on here, the battery should last at least 3 to 5 yrs, do you do a lot of stop start driving? short runs with all the electrics on, Radio,Wipers, demister, heater lights,? this can take a lot out of the battery especially if you are doing short runs, the energy that you have taken out of the battery has not been put back in, the replacement should not cost you anything only the inconvenience getting to the dealer, when you ring the dealer make sure you have all the info regards the car, just one small point, when the car is running can you see any red lights on the dash? if yes, Alternator. does the engine scream when running, Fan Belt.