Kieran Coughlan: Take interest in your interest rates - the savings could surprise you

Rural accountant Kieran Coughlan reckons moving to a lower interest rate could save more than €6,600 over a five-year car loan.
Over the course of the past few weeks, I have been shocked by the interest rates on some financial products which many of us use on a day-to-day basis.
There is massive variations on the interest rates being charged by financial institutions and non-banking finance providers alike.