I have a GLS550, 2015, coming off lease. Have on order a 2017 GLE550e hybrid. Scheduled build date 7/29/16. Also have a 2016 S550e hybrid, with the same engine/trans combo, less the 4WD, so I’m familiar with the set up and love it. People ask what good is a 17 mile range. That’s not how it works. Sure there are days when we just go around town and are 100% on pure electric. But in 10 tanks of gas we have never averaged less than 50% of the tank on pure electric, which % is monitored from "start" and "reset" just like gas mileage on all the MB models. The only time we were less than 50% was an 800 mile trip to San Francisco, where it was about 40%, and the gas mileage was about 28, and we averaged about 80 mph+, and just maybe we accidentally hit tripple digits just for a second😇 . Even at 80 mph when cruising in a line of cars on a flat or slight downhill grade, the motor would shut off and be on electric only for miles. Our best tank around town was 605 miles on 14.5 gallons for about 41.7 mpg, with lots of around town electric only mileage. Our minimum is about 35+. Last tank was 39.9. I LOVE THIS 5100 pound CAR. We are having fun watching a days drive at 70mpg. Or 99.9 when the motor never started at all. I’m looking forward to the new GLE to give similar results, same drive train, a hundred pounds more, and 4WD. I drove the first one the dealer got in recently, a 2016, and it felt peppier than the S550e, even though the weight is similar. Gearing maybe? GLE550e uses the same twin turbo 329hp as the GLE400, plus the electric, but quicker zero to 60 at 5.2 vs 6.0 seconds. Tesla electric feel at start, especially on E-Mode, which is Electric ONLY. Move over Rosberg and Hamilton on your similar F1 hybrids! UPDATE. MY 2017 GLE550e hybrid was built on 7/29/16. My lease was up so I turned my GLS550 back and made cars plans until mine arrived. 2 days later I got the dreaded update on my GLE. It was already prepped to ship from Alabama to CA but the whole 550e line was put on hold. I'm told it was because of the VW fiasco. It's supposedly making some or all "alternative fuel" vehicles perform a new/revised fuel mileage test, and the manufacturer to reprint the window stickers. Meanwhile I'm driving a friends "beater" pickup getting 12 mpg. I asked WHEN, and the dealer said 10 days to 2 years! Ha Ha! His best guess is "September”. I’ll post updates.