1. 2020 Yukon/Yukon XL 4x2 with 5.3L V8 engine and 6-speed automatic transmission fuel consumption estimate is 15.7 L/100 km city and 10.5 L/100 km highway. Fuel consumption estimates based on GM testing in accordance with Government of Canada approved test methods. Refer to vehicles.nrcan.gc.ca for details. Your actual fuel consumption will vary.