That's absurd. 10-20% degradation is unheard of and would mean that in 2-3 years ever single mach-e would be getting a warranty battery replacement lol.
Interesting, all the evidence and experience I have suggests otherwise. But if you’re correct in stating that 30% degradation in just the first few years is normal, yet the manufacturers usually will replace the battery under warranty if that occurs, then they would be doing full battery replacements for most of the vehicles they sell. That doesn’t make sense. Ford’s warranty is 70% of the battery after 8 years. If you’re correct, then we’ll all be getting battery replacements under warranty, likely multiple times.
SoC and energy usage are always going to be estimates, that's just the nature of the technology. I have found it accurate enough to understand the impact of climate control on my range, anyway.
10% in first couple of years does not mean 10% every year thereafter. In my experience the degradation is more during first couple of years and then it does not degrade much after that. Mach-e might be a little better because of the bigger unused capacity buffer and the slow DC charge speed especially above 80%. They were very conservative but I am hearing that they will be releasing 3kwh of the unused capacity and speed up DC fast charging so no more conservative.
This is what I was thinking as well. I normally set my climate to 67 on low fan and it is comfortable for me. I wonder how much better the trip efficiency would have been with it set at 67?
I would question that but we will see in years 2-8. Pouch cells from LG have had little degradation. I have a Hyundai Ioniq EV. Zero degradation over 2.5 years. The oldest 17 Ioniq I know of 5 years and 100k has none as well. ioniqs only have air based temperature conditioning.
If your experience is with Tesla, then yeah, that’s the trade-off between Tesla’s range-and-performance-at-all-costs mentality vs Fords more conservative approach. Tesla pushes their batteries to the limit to squeeze out performance (high current), to maximize DC fast charging speed, and advertise the longest possible range (no buffer and scheduled 100% charging whenever you want). That’s part of why I traded my Tesla for a MME. I believe Ford is prioritizing longevity, even if only to minimize warranty claims.
. Agreed. The family was cold as I kept the house on 65 too. The car stone cold at the start hurt as well.
Exactly. Ford officials have stated that normal battery use with the MME (even charging to 90% every day) should result in no more than 5% degradation after the first 100,000 miles.
Yes my experience on this exact same trip, preconditioned and 10f was 2.5 mi/kWh on the trips. I do think it drops quite a bit more at 0F, hence the 1.9 on my way home, which is the same exact route and passengers as the 2.5 mentioned above.
I can identify with the accuracy (or lack thereof) of the FordPass data. I don't review trip data on FordPass, but I can verify that the charging log data in FordPass is often erroneous. The app still needs a TON of work, and I have zero trust in the driving/charging metrics.
Remember when we got into the Mach E at 3F the car was 3F. I did not reach 72F and notice the fans slowing down until 20-30 mins into the first 39 mile leg. I did not want my Son in the back to be cold the whole way either. The moral of the story is precondition or wear a snowmobile suit! Also that glass roof radiates a ton of Cold. Thanks for the comment.
Your opinion / experience doesn't match up with real world information that I read, and know of, and my experience.
Interesting data. Thanks for posting.I hit a new low last night with a 79 mile trip out to dinner. -2 to 3F, an average speed of 45 MPH, 3 people, dry salted roads. We started with 80% battery, not preconditioned, cold interior, returned home with 23% battery.
39.2 miles to and from. So, 0.57*88=50.2 kWh to drive 78.4 miles is 1.56 mi/kWh or an overall range of 138 miles, premium AWD ER. Overall range loss of 51% in these conditions. Heat on Auto 72, 2 seats and wheel. Cruise used.
Car reported 1.55 (1.2 to and 1.9 return) meaning reporting error was minimal. Also the travel time shown on the final screen screen is wrong. IDK what went wrong with Trips. We did not drive 70 MPH. For a strange reason the miles of the “trip” did not reset coming back and were spot on at 78.4 for the round trip. The time is about right and return Mi/kWh.
I think I could assume if I preheated we would have done 1.9 mi/kWh each way, a much better outcome, 167 miles range.
With an SR, that’s a range of 105 miles.
Even funnier, look at my EV driving data from FordPass, I just found it recorded. 2.1 on the way there (1.2 actual) and the return with double the miles, 2.4 (1.9 actual)., 100% incorrect and attached below. I will have to say this data is useless.
A Tesla and a car from the VW group which uses similar buffers as Ford but much faster DC charging curves. Maybe I was DC fast charging a lot due to the free 3yrar EA credits ?
