looking to buy a 2004 honda civic hybrid with 125k miles. the IMA is going out they said and theres some minimal damage on the hood. nothing to worry about for me though. The car still runs fine though so im wondering what this IMA affects? Does it really need to be changed? will it be fine for a highway car and driving 12hours every couple months?

Another question is can i bypass this IMA battery so just my 12v battery runs and then ill lose some mpg(any idea on how much)? really dont know if this car would even be worth buying for 2500 but thought id check into it. thanks