Electric driving is cost effective . We estimate that an electrically driven mile in the Vauxhall Ampera will cost about one-fifth the price of a mile driven in a conventional combustion engine-powered vehicle . It is expected that it will cost about 0.02p per mile to drive electrically vs. £0.11 using petrol priced at £1.30 per litre.

We estimate that an extended range electric car will save about 1,700 litres of fuel per year based on 25-50 miles of daily driving  (15,000 miles per year).

Or if you drive 60 miles per day (21,900 miles per year)  you could save about 1,900 litres of petrol annually (compared to a vehicle that averages 36.2 mpg).

The Ampera can be plugged into a standard 240-volt/10 A  outlet for charging. We estimate that on average it will cost around £1 at night for a full charge that will deliver up to 25-50 miles of electric driving.*

The Vauxhall Ampera is likely to be charged during off-peak hours in the evening or overnight, when consumption is lower, potentially even further reducing the cost of recharging.

* Based on UK average prices for fuel and electricity. Those may very by region.