The new Lexus RX 450h not only brings sophistication and refinement to the luxury SUV market, its full hybrid system delivers the kind of tax savings its rivals simply cannot match. For company car drivers, the model’s class leading 145g/km CO2 emissions attract a benefit-in-kind tax rating of 20 per cent, which means over a three-year period they will be paying thousands of pounds less than those who choose an equivalent BMW X5, Range Rover Sport or other premium brand model.