I have to ask if the figures quoted in the end- of-term report on your long-term BMW i8 [above] ( evo 238) are correct?
You state that the car has a range of ‘up to 20 miles’ on electric power, and that it cost £ 3 to recharge overnight on cheap- rate electricity. At current prices, £ 3 buys around 0.55 gallons of petrol, so if the car can only do 20 miles on £3 of electricity, in terms of cost per mile that’s equivalent to just over 36mpg.
I thought the point of EVS was that they were supposed to be more economical than their petrol equivalents? Did no- one at BMW get that memo? Simon Long, Cambridge
Our mistake. £3, or thereabouts, is the cost to fully charge the i8’s batteries on a daytime rate. Charging overnight on a cheaper tariff brings the cost comfortably below 80p, which for a 20-mile range gives the equivalent of over 130mpg. – SG