Coventry and Birmingham Low Emission Demonstrators (Cabled) consortium used 110 cars and drivers to clock up more than 640,000 miles over the period.
Results suggest longer journeys were made as the scheme wore on.
Researchers predict electric vehicles could make up as much as 10% of total global vehicle sales by 2020.
Cabled is one of eight projects that make up a £25 million government trial looking at low carbon vehicles.
Project leader Neil Butcher said the cars were practical for short journeys.
Mr Butcher said: "They're a perfect day-to-day runabout. Not everyone's going to be happy with an electric car because they've got a range of around 100 miles.
"They're quite expensive to buy but they're very cheap to run when you've got one."
Limited speed
The average charge time was shown to be between two to three hours at a cost of up to 80p.
Craig Pullen also took part in the trial and saved around £300 per month in fuel costs because he was able to charge his car at work.
Speaking about his experiences, Mr Pullen said: "It's almost exactly the same as driving a conventional automatic vehicle with the exception of it being fairly silent so there's no rev noises and it's limited to a top speed of 65mph.
"If I have to have the wipers and lights and heating on then that does have an effect on the range of the vehicle."
Let's face it, electric cars aren't cheap. The latest vehicle to go on sale, the Nissan Leaf, billed as the world's first mass-produced electric car, costs just shy of £24k, and that's after a £5k government subsidy. The Cabled trial was design to test the concept of low- carbon vehicles. Whether they're affordable and whether they provide a transport solution for most journeys. Obviously, they not well suited to long journeys, but with 75% of journeys during the trial being less than 20 mins in duration then electric technology seems perfect. But even despite short journeys those taking part in the trial still complained about suffering from something called "Range Anxiety" or the worries that the car will run out of juice. The trial will add valuable data to the drive towards widening electric car use. Already there are predictions that by 2020 between 5-10% of all cars sold will be electric.
Fonte: BBC News, 01-05-2012