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PostPosted: Sat Dec 15, 2018 9:42 pm 
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Joined: Sat Dec 15, 2018 9:31 pm
Posts: 2
Hi everyone, just bought my first FFE (and first electric) today, 2013 with 47k on the odometer. When I got to the dealership to test drive it was at about 80% ish battery and showed a range in the 40+ so I wasn't concerned. However on my 30 mile trip home afterwards the range dropped severely to 12 miles left by the time I got home and battery percentage seemed to drop precipitously as well. Since this is my first electric and FFE I wasn't sure if this was normal for a 5 year old 47k mileage car? It was cooler today here in CO so the HVAC was on and off on the drive but not cranked.

I have 4 more days where I can return the car for a full refund if I'm not happy, just wondering if this is exceptional degradation and should be taken up with FoMoCo and/or dealer or if I should just take the car back and keep searching or if this is normal or it wasn't fully charged?


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PostPosted: Sun Dec 16, 2018 1:15 pm 
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Joined: Thu Aug 11, 2016 3:31 pm
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Some more info would be useful. What was the ambient temperature like? What kind of driving (slow/urban; fast/hwy) was done during the 30 mile trip? Was the ~40 mile range estimate with climate control on or off? OEM tires?

Off the top of my head, for a car that was probably being driven aggressively by prospective buyers, I'd say that 40-ish miles on the guessometer with the cabin heater on and ~80% battery SOC is not that far off the mark. You say you started with >40 miles estimated range, drove 30 miles, and ended up with 12 miles left. That seems like exactly what one would expect. Why do you call it a severe drop? If you search the forum you can find info on doing a battery draw-down test. Bear in mind that colder battery temps during winter will reduce the effective battery capacity.

For my lightly used 2014 FFE (~30,000 miles), during the current winter season (mild Gulf Coast weather), I typically see 60-65 miles on the guessometer when fully charged and the heater is off. This is with non-OEM tires (better wet traction but higher rolling resistance) that reduce my range a bit. In summer, it's usually ~90-92 miles with no AC ( was typically 94+ with the OEM tires) - however, I do a higher proportion of slow urban driving in summer, which probably exaggerates the winter/summer differences.


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PostPosted: Sun Dec 16, 2018 3:47 pm 
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Joined: Sat Dec 15, 2018 9:31 pm
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Thanks Amped, I was wondering how accurate the estimated mileage was, and a little more reading I found that the guess-o-meter is exactly that and I didn't look at the percent of the charge. I'll definitely be doing a draw down test in the next few days while I have the opportunity to drive it to work and back, hopefully that'll help ease my concern about the purchase. Love the car overall but wanted to be certain I wasn't buying in to something that would not be viable for my 32 mile round trip commute!


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