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Cadillac DeVille Gas Mileage (MPG)

Unlike other fuel economy surveys, TrueDelta's Real-World Gas Mileage Survey includes questions about how and where a car was driven. So you can get an idea of the Cadillac DeVille's real-world MPG based on how and where you drive a car.

Reported MPG

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If you are not a TrueDelta member, you can see only five Cadillac DeVille MPG averages for each powertrain. Log in or join us to see them all.

Cadillac DeVille Gas Mileage

Year Body/Powertrain flat, hilly, or mountainousLand driving style: very light to "lead foot"Foot A/C use: none to heavyA/C constant stop and goTraf % many stops per mileCity % stop every mile or twoSub % fairly steady speedHwy % Hwy Spd MPG
2005 4dr Sedan 290-horsepower 4.6L V8
4-speed automatic FWD
flat v.lt none 0 0 25 75 65 24.5
2005 4dr Sedan 290-horsepower 4.6L V8
4-speed automatic FWD
flat v.lt none 0 0 25 75 65 24.5  
  Averages flat v.lt none 0 0 25 75 65 24.5
With the 290-horsepower 4.6L V8 engine, 4-speed automatic transmission, and front-wheel drive, 2005 Cadillac DeVille fuel economy has been averaging 24.5 MPG (miles per gallon).

The 2005 Cadillac DeVilles in this analysis were driven mostly on the highway at an average speed of 65 miles per hour (about 75 percent of the miles driven). The rest of the miles were in the suburbs (25 percent), in heavy traffic (0 percent), and in the city (0 percent).

In addition the average 2005 Cadillac DeVille in this analysis was driven on flat terrain with an ultra-light foot and the AC not used at all.
 
Year Body/Powertrain flat, hilly, or mountainousLand driving style: very light to "lead foot"Foot A/C use: none to heavyA/C constant stop and goTraf % many stops per mileCity % stop every mile or twoSub % fairly steady speedHwy % Hwy Spd MPG
2004 4dr Sedan 275-horsepower 4.6L V8
4-speed automatic FWD
flat light light 20 21 22 37 60 20.0
  flat lead light 10 10 40 40 80 19.1
  flat light light 20 21 22 37 60 20.0
2004 4dr Sedan 275-horsepower 4.6L V8
4-speed automatic FWD
flat med light 17 17 28 38 67 19.7  
  Averages flat med light 17 17 28 38 67 19.7
With the 275-horsepower 4.6L V8 engine, 4-speed automatic transmission, and front-wheel drive, the 2004 Cadillac DeVille has been averaging 19.7 MPG (miles per gallon).

The 2004 Cadillac DeVilles in this analysis were driven mostly on the highway at an average speed of 67 miles per hour (about 38 percent of the miles driven). The rest of the miles were in the suburbs (28 percent), in heavy traffic (17 percent), and in the city (17 percent).

In addition the average 2004 Cadillac DeVille in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.
 
Year Body/Powertrain flat, hilly, or mountainousLand driving style: very light to "lead foot"Foot A/C use: none to heavyA/C constant stop and goTraf % many stops per mileCity % stop every mile or twoSub % fairly steady speedHwy % Hwy Spd MPG
2003 4dr Sedan 300-horsepower 4.6L V8
4-speed automatic FWD
flat med none 0 0 0 100 62 23.3
  flat med none 0 0 70 30 62 18.1
  flat med light 5 35 30 30 60 16.0
  flat med none 0 0 70 30 62 15.7
2003 4dr Sedan 300-horsepower 4.6L V8
4-speed automatic FWD
flat med none 1 9 43 48 62 18.3  
  Averages flat med none 1 9 43 48 62 18.3
With the 290-horsepower 4.6L V8 engine, 4-speed automatic transmission, and front-wheel drive, 2003 Cadillac DeVille gas mileage has been averaging 18.3 MPG (miles per gallon).

The 2003 Cadillac DeVilles in this analysis were driven mostly on the highway at an average speed of 62 miles per hour (about 48 percent of the miles driven). The rest of the miles were in the suburbs (43 percent), in the city (9 percent), and in heavy traffic (1 percent).

In addition the average 2003 Cadillac DeVille in this analysis was driven on flat terrain with a medium foot and the AC not used at all.
 
Year Body/Powertrain flat, hilly, or mountainousLand driving style: very light to "lead foot"Foot A/C use: none to heavyA/C constant stop and goTraf % many stops per mileCity % stop every mile or twoSub % fairly steady speedHwy % Hwy Spd MPG
2003 4dr Sedan 275-horsepower 4.6L V8
4-speed automatic FWD
flat med hvy 10 10 30 50 75 20.3
  flat med light 11 6 28 56 70 18.5
  flat med hvy 24 24 25 27 75 21.7
2003 4dr Sedan 275-horsepower 4.6L V8
4-speed automatic FWD
flat med hvy 15 13 28 44 73 20.2  
  Averages flat med hvy 15 13 28 44 73 20.2
With the 275-horsepower 4.6L V8 engine, 4-speed automatic transmission, and front-wheel drive, 2003 Cadillac DeVille fuel economy has been averaging 20.2 MPG (miles per gallon).

The 2003 Cadillac DeVilles in this analysis were driven mostly on the highway at an average speed of 73 miles per hour (about 44 percent of the miles driven). The rest of the miles were in the suburbs (28 percent), in heavy traffic (15 percent), and in the city (13 percent).

In addition the average 2003 Cadillac DeVille in this analysis was driven on flat terrain with a medium foot and the AC on most or all of the time.
 
Year Body/Powertrain flat, hilly, or mountainousLand driving style: very light to "lead foot"Foot A/C use: none to heavyA/C constant stop and goTraf % many stops per mileCity % stop every mile or twoSub % fairly steady speedHwy % Hwy Spd MPG
2002 4dr Sedan 275-horsepower 4.6L V8
4-speed automatic FWD
flat light none 0 0 0 100 75 26.9
2002 4dr Sedan 275-horsepower 4.6L V8
4-speed automatic FWD
flat light none 0 0 0 100 75 26.9  
  Averages flat light none 0 0 0 100 75 26.9
With the 275-horsepower 4.6L V8 engine, 4-speed automatic transmission, and front-wheel drive, the 2002 Cadillac DeVille has been averaging 26.9 MPG (miles per gallon).

The 2002 Cadillac DeVilles in this analysis were driven mostly on the highway at an average speed of 75 miles per hour (about 100 percent of the miles driven). The rest of the miles were in heavy traffic (0 percent), in the suburbs (0 percent), and in the city (0 percent).

In addition the average 2002 Cadillac DeVille in this analysis was driven on flat terrain with a light foot and the AC not used at all.
 
Year Body/Powertrain flat, hilly, or mountainousLand driving style: very light to "lead foot"Foot A/C use: none to heavyA/C constant stop and goTraf % many stops per mileCity % stop every mile or twoSub % fairly steady speedHwy % Hwy Spd MPG
2000 4dr Sedan 275-horsepower 4.6L V8
4-speed automatic FWD
flat light hvy 5 25 60 10 60 23.0
2000 4dr Sedan 275-horsepower 4.6L V8
4-speed automatic FWD
flat light hvy 5 25 60 10 60 23.0  
  Averages flat light hvy 5 25 60 10 60 23.0
With the 275-horsepower 4.6L V8 engine, 4-speed automatic transmission, and front-wheel drive, 2000 Cadillac DeVille gas mileage has been averaging 23.0 MPG (miles per gallon).

The 2000 Cadillac DeVilles in this analysis were driven mostly in the suburbs (about 60 percent of the miles driven). The rest of the miles were in the city (25 percent), on the highway at an average speed of 60 miles per hour (10 percent), and in heavy traffic (5 percent).

In addition the average 2000 Cadillac DeVille in this analysis was driven on flat terrain with a light foot and the AC on most or all of the time.

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What Our Members Are Saying about the Real Cadillac DeVille MPG

Cadillac DeVille Fuel Economy: Pros
Year Body/Powertrain Comment
2003 4dr Sedan 275-hp 4.6L V8 4-sp automatic FWD 300hp and 25+MPG highway for a very large and heavy car is great.