Speedometer icon How long do I need to maintain my mileage records for IRP and IFTA, and fuel records for IFTA?

Question: 
How long do I need to maintain my mileage records for IRP and IFTA, and fuel records for IFTA?
Answer: 

IFTA records (mileage and fuel) are required to be maintained for four (4) years and IRP records (mileage only) for five (5) years.