Hybrid running costs calculations

I currently have a 120-mile commute with town driving on either end. My 2011 V60 T6 averages 31mpg on the journey so I’m using about £27 in fuel or about 23p a mile at £1.50 per l

I’ve seen a 2013 D6 twin engine for sale. This will do around 25 miles with a 12khw battery and about 45mpg on diesel. At home, the battery would cost £3.24 to fill at 27p per KWh and £9.72 at 81p per KWh at its most expensive on the street. The diesel engine will do around 45mpg or about 16p per mile.

Therefore, from home 25 miles at 13p and 35 miles at 16p would make the commute to work cost £8.85
From work 25 miles at 81p (worst case) and 35 miles at 16p would make the commute home £15.32

The total commute to work be £24.17, only around £3 less than what my 3.0 T6 would do.

Or am I missing something or making a huge mistake? Does the cost of using public charging points make plug-in hybrids uneconomical? Does the poor KWh per mile make them uneconomical?

Would the stop-start, 20mph, congestion, etc, mean the reality would be a lot better than I've calculated?

The "city" part of my commute is about 16 miles each way, so I wouldn't have enough to do it all on one charge, hence the need to top up publicly.

I'm asking the question to see what I've missed.

yeah just do the full journey back with diesel? why use a public charger for such a limited mileage if its so expensive?

alternatively, you need a hybrid with a slightly larger electric range so you can cover more of the total distance using cheap home electricity.

Public charging rarely makes sense in PHEVs, and you can usually get a lot cheaper than 27p at home.

Not familiar with the Volvos but every other PHEV I've owned or driven may default to using electric but can be put into a charge save or hybrid mode to keep some in reserve. Use the electric on the bits that would be less efficient (crawling through traffic, etc), save charge when you're going faster, and just make sure you get home without any electric left.

Thanks for the replies

It seems that the best solution would be to save electricity for the working end of the commute, which is definitely the worst part of the economy, and just charge at home.

Any reason why you would not want to go full EV? You can get costs down to about 2p/mile using an EV tariff, and have lower maintenance costs, quieter, more responsive drive.

I can't afford one that would fit the family's needs at the moment.

I only have to go in one or two days a week. The cost of the new car is virtually the same as what mine is worth, so I'm working strictly on MPG as there is no other outlay, and VED will be less.

If I ever have to go back to the office full-time, they will definitely be considered.

That's the funniest thing i have read on any EV related thread

an MG5 can be had starting at £10k - its an estate (just about)
Can do 180-220 miles on a full charge (costing £10-15 worst case at home).

I'd seriously consider it