Cadillac Fleetwood/DeVille (FWD) Fuel Economy History

MPG by year — EPA official data.

Best MPG Year

1984

24 MPG combined

Latest Model

1985

23 MPG combined

Year	Engine	City	Hwy	Combined	Fuel Cost/yr
1985	Diesel Diesel	19	29	23	$3,700	Details →
1984	Diesel Diesel	21	31	24	$3,500	Details →