Re: Long range forecast. I watched an interesting video on Carwow youtube channel where they took 6 fully-charged EVs and drove them up the A1 until they ground to a halt. They were driving at motorway speeds and with lights on for part of the journey. The cars achieved between about 72% and 90% of their claimed range. However, if you combine the idea of rapid charging only up to 80% capacity, and that most suppliers will consider a battery to be healthy until capacity has fallen to 70%, then for practical purposes after a few years of ownership you may have a practicable range of about half the official value. Regardless of what the National Grid can supply, it is the local distribution network that will not be able to cope with a mass roll-out of battery vehicles. The cables buried in the street are just not large enough to supply enough current for every house to charge an EV, even on a relatively slow over-night charge.
According to an article on this website, manufacturers have been overly pessimistic about the longevity of batteries:
"Electric cars lose just one per cent of their battery capacity per year due to degradation, new research claims."
www.honestjohn.co.uk/news/owning-1/2019-11/researc.../
To look after the battery, it's best not to charge them beyond 90% regularly, but most people don't drive 200 miles per day, so that's not an issue. I'd also be surprised if the average Porsche Taycan purchaser kept the car for over eight years, driving on average in excess of 12,500 miles per year. In which case they can be sure that they'll keep at least 70% of the original range.
If they do, then it's probably not the right choice for them, but I think more people are put off electric cars by this worry than need to be.
I'd also be interested to see how the cost of replacing the battery in a Taycan compares to the servicing and fuel costs of a Panamera over the eight years...
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