With such a high average speed (120-130 km/h) I’m not surprised by your fuel consumptions. Due to lower aerodynamics of the car, driving above 100 km/h tends to punish mileage much more compared to a sedan. My T4 FWD driven at 130km/h (80 mph) returns 8,2 l/100 (34,5 mpg), whereas at 100 km/h returns 5,8l/100km (48,7 mpg).ropetko wrote: ↑Wed Jan 20, 2021 6:11 pm Just did two 100 miles drives a few days ago (business meeting) with my D4 AWD, driving from the seaside, across the mountains and to the valley (and back) with the avg. speed of 75-80 mph. It worked out at 34 mpg in the morning and 33.6 in the evening. It's not just that Volvo On Call told me these values, but I refilled the same amount of diesel fuel at the gas station near my home.
I'm not that satisfied with 34 mpg for a D4 engine, but I blame the Pirelli Scorpion Winter tires on that. Hope I'll get better results with Continental summer tires soon.
Unfortunately, summer tires won’t decrease significantly consumption figures, but higher outside temperature will surely make a difference...