2003 Enzo Ferrari with about 3,000 total miles on the car: 12.5 MPG. EPA is 8 MPG city, 12 highway.
90 percent city driving, not exactly trying to get good mileage. Using 0W30 instead of OEM 10W60 oil.
2007 Maybach 57s with about 4,000 miles on the car: 15.5 MPG. EPA is 10 MPG city, 16 highway.
85 percent city driving, not exactly trying to get good mileage. Using 5W20 instead of OEM 0W40 oil.
2004 Ford Expedition with around 22,000 miles on the car: 15.5 MPG. EPA is 12 city, 16 highway.
95 percent city driving, trying to get the best mileage but hauling stuff from Home Depot from time to time.
Using Motorcraft, OEM oil, 5W20.
2004 Lamborghini Murcielago with about 7,500 miles on the car: 12.5 MPG. EPA is 8 MPG city, 12 highway.
90 percent city driving, not exactly trying to get good mileage. Using 5W20 instead of OEM 5W40 oil.
2007 Bentley GT convertible with about 2,500 miles on the car: 14.5 MPG. EPA city is 10 MPG, 17 highway.
90 Percent city driving, average type of usage. OEM oil unchanged as yet, found to be a 30 grade on UOA.
aehaas