I own FD3 2007 and cars has run 200,000 Km now. IMA indicate but still didn't change the battery. The battery just helps for climbing high hills and pickup. Otherwise no big fuel difference or acceleration issue. There are recondition batteries from 100,000 LKR to onward but I don't about the durability. Upul (Malabe) said he has it for 1.5 Lak and 2.0 Lak.