A couple of people in other posts have had this, including me. At about 9 months old my PHEV started showing 31 miles at 100% battery and has continued to do so since.
Most nights it is scheduled to charge for 4 hours from a home wall box. Sometimes it is empty and sometimes only needs 50% charge or so. Either way, it should reach full charge in less than the 4 hours which should enable battery balancing time at a low charge rate after the main charge (at least that's how I understand battery balancing, but it's not explained well in any handbook). Anyway, it's never returned to showing 32 miles. At times, I have got well into the mid 30s in real life range and so it appears to be performing much the same as when new. I was worried about battery degradation after such a short time of ownership.
I owned a VW Golf PHEV ( from new ) for about four years before going full BEV in 2019.
When new, it would display 30 miles when fully charged, after about 12 - 18 months it dropped from 30 to 29 miles after a full charge.
This was similar situation with other owners.
Depending on the outside temperature, it would display a higher or lower figure after a full charge of course, but as the car aged so did the predicted range after a full charge.
At four years old and about 30,000 miles, it would only ever predict a range of 27 miles.
Is this down to some battery degradation?.
I strongly suspect so.
A little less important on a PHEV because you have the back up of an engine of course.
I witnessed a similar situation occurring on our Gen1 ZS EV after two years and 20,000 miles of use.
We now have a long range ZS EV facelift.
Important to build in some degradation losses into your choice of EV at the time of purchase, I have now learnt.
