|
I'm going to suggest the problem is in your data collection/comparison, simply because modifying driving habits alone will result in significant savings, guaranteed.
When you say you were getting 15.1 "before", are you talking about a single tank? Your vehicle's "lifetime" MPG average? Was 15.1 before making any changes, including to your driving technique? Are you comparing the exact same route, same accessory loads (e.g. air conditioning) and traffic conditions?
|