New electric cars are more likely to develop a fault than petrol and diesel models, a new survey suggests. A poll by British consumer group Which? indicated that 31% of electric car owners reported a problem with their vehicle in its first four years. That is compared with 19% for petrol cars and 29% for diesel cars. Faulty electric vehicles (EVs) spent an average of five days off the road compared with just three and four days for petrol and diesel cars respectively. The survey casts doubt on the perception that EVs are more reliable than traditionally fuelled cars due to having fewer moving …