One of the problems facing EV adoption is range anxiety. When I first started looking at the Model S, I thought that the 160 mile varient would be plenty for me, as my daily drive is only 80 miles round trip, with 1 day of 100 miles per week. When I ran the numbers for charging in normal mode, and driving the speed limit, as well as using the HCAC, I discovered that the 40kw Model S will be cutting it really close, and may not have enough range for my needs. I am an EV enthusiest, and was able to figure this out on my own, but the average car buyer is not, and should not need to be. For the average person to be willing to buy an EV, they need to know that it will have the range that they need, and they need to know this without breaking out a calculator.
The problem is, EV manufactures do not report their vehicles range in a format that is useful to the average consumer. For example, Nissan says that the leaf will go 100 miles, but it is common knowlege that 70 miles is a much more accurate number. The 40 kw Model S is rated at 160 miles, but when you factor in charging in normal mode, as well as driving above 55 mph, we will probably be looking at 110-120 miles actual range.
Right now, ICE vehicles report 2 number, city mileage and highway mileage. I would propose a similar system for EV's, with the first number being the minimum normal operating range (assuming charging in normal mode, driving at 70 mph, and using HVAC). The second number would be the maximum ferry range (No HVAC, Charged in range mode, and traveling at 55 mph.) This number would reflect the farthest that a driver could expect to take their vehicle on a one way trip.
For example, the Leaf would report as 70/100 or the 40 kw Model S would report as 110/160.
A system like this would not only be more honest on the part of the manufactures, but would result in less consumer confusion, and eventually more people making the switch to EV's.
The real question is, what can the EV community do to encourage the companies leading the way to agree on a standard, and all follow it? (they cannot even all agree on a standard for a EVSE connection, much less something like range reporting)
The problem is, EV manufactures do not report their vehicles range in a format that is useful to the average consumer. For example, Nissan says that the leaf will go 100 miles, but it is common knowlege that 70 miles is a much more accurate number. The 40 kw Model S is rated at 160 miles, but when you factor in charging in normal mode, as well as driving above 55 mph, we will probably be looking at 110-120 miles actual range.
Right now, ICE vehicles report 2 number, city mileage and highway mileage. I would propose a similar system for EV's, with the first number being the minimum normal operating range (assuming charging in normal mode, driving at 70 mph, and using HVAC). The second number would be the maximum ferry range (No HVAC, Charged in range mode, and traveling at 55 mph.) This number would reflect the farthest that a driver could expect to take their vehicle on a one way trip.
For example, the Leaf would report as 70/100 or the 40 kw Model S would report as 110/160.
A system like this would not only be more honest on the part of the manufactures, but would result in less consumer confusion, and eventually more people making the switch to EV's.
The real question is, what can the EV community do to encourage the companies leading the way to agree on a standard, and all follow it? (they cannot even all agree on a standard for a EVSE connection, much less something like range reporting)