Citroen's C-Zero has been named by Cap HPI as the cheapest pure-electric car to run over a two-year/20,000-mile period.
The automotive data specialists looked at the total cost of ownership (TCO), including costs such as servicing and fuel.
It found the C-Zero has the lowest total cost of ownership at £18,319 (£508.86 per month). Hot on its heels is the Peugeot Ion with a TCO of £18,489 (£513.58 per month).
Next was the Volkswagen Up with a TCO of £19,080 (£530 per month) followed by the Hyundai Ioniq with a TCO of £20,632 (£573.11 per month) and the Renault Zoe with a TCO of £20,817 (£578.25 per month).
Cap HPI found the Tesla Model S and Model X have a TCO of £43,027 and £53,279 (£1195.19 and £1492.47 per month) respectively.
Chris Plumb, Black Book editor at Cap HPI, said: “More than 60,000 new AFVs have joined Britain’s roads so far this year. The overall used market for electric vehicles has seen gains with residual values increasing by 7% this year.
“As consumer interest in electric vehicles continues to soar now could be a good time to consider switching to a used EV.
"The market for alternatively fuelled vehicles (AFVs) saw a record market share of 4.4% in June with more than 10,700 hitting the roads, a rise of 29.0%.
"EVs and plug-in hybrids can provide a good balance between range and efficiency plus the economic benefits for motorists can be enormous, offering big savings on fuel and tax costs as well as much lower maintenance costs.”