If you bought an electric vehicle in the UK this year, there’s a good chance it was an MG4. The fully electric hatchback, which launched in 2022, sold 5,200 units in the first three months of this year, the second-best selling EV behind Tesla’s Model Y. With prices starting at about £27,000, it is also substantially cheaper than the Tesla at £45,000. And while MG is one of Britain’s most famous car brands – with a century of carmaking in Birmingham until MG Rover’s 2005 collapse – the secret to…