Seems if prices keep rising at this rate, this is what we can expect to see by the end of the year, I have done some comparisons below so you can get a clear picture of what this actually means in costs. The possible future costs for 10K mile per year you can easily use to work out what you family may need to spend based on your total annual milage, so if you have two petrol cars and do 15K miles a year multiply the 10k cost by 1.5
According to Government stats:
03 Jan 2022 the average pump price of Unleaded Petrol was £1.4504/gall and Diesel £1.4885
27 Jun 2022 the average pump price of Unleaded Petrol was £1.9093/gall and Diesel £1.9893
This is a percentage rise over 6 months for petrol 32% and diesel 34% If that continues till the end of this year then we can expect to see petrol to rise to £2.5204/L and Diesel to £2.6259 This would make the average price for gallon of E10 unleaded £11.4421 and Diesel £11.9215
Yes I know it sounds unbelievable but this is what some Fuel analysts in the market are strongly forecasting. For and average family car a tank is abut 65L and most people fill up with about 10L left in it, so a 55L fill up of petrol would cost £138.62 and for Diesel £144.42
Assuming an average 40mpg for petrol this is 22p/mile and for 60mpg diesel 15p/mile, current costs
Rising to petrol 29p/mile and for 60mpg diesel 20p/mile
In comparison an EV even at 35p/kwh is 8.75p/mile (assuming 4 miles/kwh) - 39% the cost of petrol, and even if base electric prices rise in October to 50p/kwh then is will be 12.5p/mile - 43% the cost of petrol then.
A 10K miles annual usage, EV is £875, and petrol £2200 at current prices, at inflated rates £1250 for the EV and £2900 for petrol.
I have not taken into account that you can get electricity for EV charging at home at off peak rates at around 7.5p/kwh, so even if re-charging at home for 66% at this rate and 34% at public chargers you would spend £123.75 (6600miles/4mile/kwh*£0.075/kwh) and £433.50 (3400miles/4mile/kwh*£0.51/kwh) = £557.25 in total for the year.
I hope this gives some insight and helps you who are thinking about how to manage this.