Range

All range figures quoted are as supplied by the manufacturers. These will be in test conditions and with ideal settings, so a warm day, a dry, smooth road, lightweight rider, no inclines, lowest assist speed setting. 

The figures you will achieve in reality will vary. Most people will ride with undulations, most rides will involve stopping and starting and accelerating from a stop, many riders will also switch to the fastest speed setting and never use the lower speed settings. 

Based on actual tests by reviewers and industry experts a "real life" range figure can be estimated at around 50-70% of the manufacturer's figures.

When comparing e-bike specifications don't make your buying decision based on range. If two products have the same motor and same battery then even if different brands the range is going to be similar, (despite what the manufacture's figures claim).

If comparing e-bikes and one has a larger Ah battery rating and the motor is the same then the bike with a larger Ah rating should have a greater range.