The Toyota Yaris Cross has come out on top in a recent test to see how a car performs efficiency-wise against claimed manufacturer consumption figures. UK magazine What Car put a series of the latest vehicles through its Real MPG fuel economy testing procedure to see how close they would come to their claimed efficiency. It was the Toyota Yaris Cross which performed the best, posting a real-world MPG of 60.1, just 4.14% less than the 62.7mpg claimed by the manufacturer. In fact, Toyota has three vehicles within the top 10, with its Yaris Cross, standard Yaris and Aygo X all coming close to the…