I have some interesting anecdotal evidence on the eco mode feature.
When my LR4 remains un-driven for an extended amount of time (1 week or more), eco mode engages the first day or two after I resume driving. After that eco stops engaging during daily driving. Once I go out of town again the cycle repeats.
When my LR4 remains un-driven for an extended amount of time (1 week or more), eco mode engages the first day or two after I resume driving. After that eco stops engaging during daily driving. Once I go out of town again the cycle repeats.