Reply To: New cars are 5.4% less efficient than WLTP figures suggest, Volvo XC40 is the wo June 19, 2020 at 8:07 am #115536 SaintsmanI put a review of the XC40 around this time last year. I said I was shocked at getting 28mpg, especially since most of it was cruising on autobahns restricted to 80/100 kph