2003 Mercedes-Benz E-Class E320 Rwd 4dr Sedan (3.2L 6cyl 5A)
I use midgrade gas and this has served me well. 125K to date and highway mileage 27-30 mpg at 65-71 MPH. Heated steering wheel does not operate at low (40 and below) temp until vehicle warms up. At 6' I drive with seat all the way back and the side cloth is worn from getting in and out of drivers side. Living in PA I have not had a problem with the vehicle being RWD, in ALL KINDS OF SNOW.
Driving comfort, handling, gas mileage, and reliability.