A little known plug-in hybrid has set a new Guinness World Record for the longest distance covered on a single tank of fuel and battery charge. The Roewe D7 sedan, which is built by Chinese giant SAIC group which also has MG in its stable, travelled for more than 2200km before needing a top up. The current D7 uses a 1.5-litre petrol engine combined with an electric motor that is fed by a 21.4kWh lithium iron phosphate (LFP) battery. Max outputs are 150kW and 330Nm. Read more about Toyota’s record setting hybrid car: You’ll only need to refuel nine times a year in the 2025 Toyota Prius as it sm…