You REALLY have to do your homework very carefully, when considering moving to a full EV or maybe you have access to a second ICE car ?.
I went from owning a PHEV for four years, then made the jump into a full EV.
So, after owning a PHEV for that length of time, I was MORE than sure that a full BEV would suit our needs.
My wife has a small ICE car also, this could be seen as a “Back Up” plan.
But it has never been the favoured option for BOTH of us !.
The PHEV was a great car and I though the economy was really good.
It’s surprising how many people purchase a PHEV and never plug them in !.
What a waste of money.
When you are doing your “Man Maths” you do have to factor in a few things with owning a PHEV.
Check the price of the servicing costs, you WILL find that the costs do increase greatly as the car gets older.
The first couple of years are okay, but then it gets more expensive.
Remember with a PHEV you are serving two masters.
There is the ICE servicing demands, then the electric side of things also.
Although the PHEV is cheap to run, you will not get close to the low running costs of a BEV.
Am I glad I choose to go down the PHEV route first ?.
Yes - It was a great “Bridge” car into the world of a full BEV.
It helped give me the confidence to go full BEV.
I would totally recommend going full BEV in a heart beat IF you are 100% sure it will cover your usage requirements.
The safest bet for moving from a previous ICE car, to either a PHEV or a BEV is the biggest dilemma.
Most people will often air on the side of caution and go for a PHEV.
They are a “Toe In The Water” start to the world of full electric powered cars.
Warning

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Electric car driving is very addictive !.
The more you drive in pure electric, the more you want to drive ALL of the time in electric mode.
Buying a PHEV can give you this feeling, I had it in my previous car.
All is nice a smooth, then you hear the ICE kicking in !.
It can become a little tiring at times when driving in town traffic, when your small electric range has become depleted.
Engine stop / starting just to move a couple of inches at a time.
Don’t find yourself being a PHEV owner saying :- “If only I had more electric range”.
If you find yourself in this camp, you will pine for a BEV for the whole time you own the PHEV.
It is a REALLY difficult call, which never has the right or correct answer for any two different people.
Study your usage pattern very carefully !.
Actually sit down with a piece of paper and document a typical weekly usage.
Most people are shocked how little actual mileage they really cover.
If the BEV can cover this usage with a plenty of redundancy to spare, then you choice has just become a little easier.
My ZS EV is now 18 months old and we have covered 12,500 miles in that time.
This includes two lock downs in Wales.
The car has placed no restriction on where we wanted to go, in fact we have covered WAY more miles in the BEV than we ever did in the PHEV.
Why ?.
The answer is quit simple, we enjoy the pleasure of driving / travelling in a BEV and more importantly for a OAP is the cost to cover them miles is never a concern.
The cost saving with regards to fuel is a LOT !.
Making trips for a couple of pounds is brilliant.
A sandwich and a cup of tea for our lunch, can cost more than the price of the juice to conduct the trip in many cases.
Each to there own I guest.
I have no regrets buying the PHEV it served us well over the four years of ownership, as it stands right now after 18 months of owning the BEV.
I am totally convinced I took the decision to go full BEV.
If it was not a ZS EV - It would have been another EV of some type.
None of that “Self Charging” rubbish out there !.
Do your home work, then do it again is the best advice that I can offer and I am sure you will come to the right decision in the end.
Good luck with your choice.