2005 Cadillac Armored Deville: MPG and fuel economy
The 2005 Cadillac Armored Deville is rated by the U.S. Environmental Protection Agency at 15 combined MPG, with 13 MPG in the city and 18 MPG on the highway. That lands well below the average for cars in the Large Cars class in the same model year.
This page collects every fuel-economy figure the EPA publishes for the 2005 Cadillac Armored Deville. Below you will find the headline combined, city, and highway MPG, the estimated annual fuel cost at three different driving levels, the tailpipe CO₂ emissions, and a full breakdown of the engine and drivetrain. If you want to know whether this generation got more or less efficient over the years, the year-over-year table further down covers every model year the EPA has rated.
Key takeaways
- The most efficient car in the Large Cars class for the 2005 model year is the Chevrolet Malibu Maxx at 23 MPG.
- EPA estimates this car costs around $9,250 more in fuel over five years than an average new vehicle of the same model year.
- Subject to the federal Gas Guzzler Tax, which applies to passenger cars rated below 22.5 combined MPG.
Fuel economy at a glance
These are the EPA's official ratings for the 2005 Cadillac Armored Deville. The numbers come from a standardised laboratory test cycle and are the same figures that appear on the window sticker of every new car. Real-world mileage varies with driving style, weather, fuel quality, and how heavily loaded the car is.
Combined MPG is a 55/45 weighted blend of the city and highway test cycles. The EPA uses it as the single number you can compare across the entire dataset, including hybrids and EVs (which use the equivalent MPGe figure).
| Combined MPG | 15 MPG |
| City MPG | 13 MPG |
| Highway MPG | 18 MPG |
| Annual fuel cost | $4,000 |
| Tailpipe CO₂ | 592 g/mi |
| Fuel type | Regular |
How the 2005 Cadillac Armored Deville compares
The 2005 Cadillac Armored Deville returns 15 combined MPG. Cars in the Large Cars class for the same model year average 17.8 MPG, which puts this car behind the class average by about 16%.
The most efficient car in the Large Cars class for the 2005 model year is the Chevrolet Malibu Maxx at 23 MPG. The bar chart below puts the Cadillac Armored Deville alongside the class best and the class average so you can see the full picture.
For broader context, the average new car of the 2005 model year (across all classes) returns 18.5 MPG. Larger vehicles pull the all-cars average down, so do not use that figure on its own to judge a small car or a hybrid. The full list of the most efficient cars of the 2005 model year is on its own page.
Annual fuel cost across driving patterns
The headline annual fuel cost the EPA publishes assumes 15,000 miles of driving per year and a fuel mix of 55% city and 45% highway. The dollar figure is calculated using the EPA's current reference price for regular gasoline, which is $3.99/gallon. EPA updates that reference periodically rather than tracking live pump prices, so treat it as a window-sticker estimate rather than today's pump number.
The table below scales the EPA's number to three common driving patterns. The combined MPG and the reference fuel price stay constant, only the annual mileage changes. To get a current-prices estimate, take your local gas price and multiply by 1000 gallons (the car's annual consumption at the rated MPG).
| Driving pattern | Estimated annual fuel cost |
|---|---|
| Light driver, 7,500 miles per year | $2,000 |
| Average driver, 15,000 miles per year | $4,000 |
| Heavy driver, 25,000 miles per year | $6,667 |
Year-over-year MPG for the Cadillac Armored Deville
The EPA has rated the Cadillac Armored Deville across 2 model years, from 2004 Cadillac Armored Deville through 2005 Cadillac Armored Deville. The numbers below are the best combined MPG figure the EPA published for each year, which lets you see when the car was at its most efficient and how recent generations stack up.
Combined MPG has stayed in roughly the same range across the run, hovering close to 15 MPG.
| Year | Combined MPG | Open year page |
|---|---|---|
| 2005 | 15 MPG | this page |
| 2004 | 15 MPG | 2004 Cadillac Armored Deville |
Compare against other Large Cars for 2005
If you are cross-shopping the 2005 Cadillac Armored Deville, the most useful comparison is against the other cars in the Large Cars class for the same model year. The list below shows the highest-MPG peers, ranked from most to least efficient. Click any of them to open its full page.
The Chevrolet Malibu Maxx leads this group at 23 MPG, 8 MPG ahead of the 2005 Cadillac Armored Deville.
Specifications
The 2005 Cadillac Armored Deville runs a 4.6-liter 8-cylinder engine paired with a automatic 4-spd, sending power through front-wheel drive.
Engine, transmission, and drivetrain together drive most of the variation in fuel economy across trims. A larger engine moves the car with less effort but burns more fuel. A turbo lets a small engine punch above its weight, often without much MPG penalty. All-wheel drive adds traction and weight, and usually costs a couple of MPG compared with two-wheel drive of the same engine.
- Vehicle class
- Large Cars
- Engine
- 4.6L 8-cylinder
- Transmission
- Automatic 4-spd
- Drivetrain
- Front-Wheel Drive
- Fuel type
- Regular
- Annual petroleum use
- 19.8 barrels per year
- Gas guzzler tax
- Applies (federal)
Common questions about the 2005 Cadillac Armored Deville
Quick answers to the questions people most often search for when looking up the 2005 Cadillac Armored Deville.
-
Is the 2005 Cadillac Armored Deville fuel efficient?
Not particularly. The 2005 Cadillac Armored Deville returns 15 combined MPG, which trails the average car in the Large Cars class for the same model year by about 16%. -
What MPG does the 2005 Cadillac Armored Deville get?
The EPA rates the 2005 Cadillac Armored Deville at 15 combined MPG, 13 MPG in city driving, and 18 MPG on the highway. Real-world numbers depend on your driving style, the weather, and how loaded the car is. -
How much does it cost to fuel a 2005 Cadillac Armored Deville per year?
The EPA estimates an annual fuel cost of $4,000 for the 2005 Cadillac Armored Deville. That figure assumes 15,000 miles of driving per year, a 55% city and 45% highway split, and the EPA's published average fuel price for the rated fuel grade. -
What fuel does the 2005 Cadillac Armored Deville use?
The EPA lists the 2005 Cadillac Armored Deville as running on regular gasoline. Using a different grade than the manufacturer specifies can affect fuel economy and engine longevity. -
How much CO₂ does the 2005 Cadillac Armored Deville emit?
Tailpipe CO₂ emissions are 592 g/mi. Multiplied across a typical year of driving (15,000 miles) that works out to about 8,887 kilograms of CO₂. -
What is the difference between the city and highway MPG of the 2005 Cadillac Armored Deville?
City driving returns 13 MPG and highway driving returns 18 MPG, a gap of 5 MPG. The two figures are close enough that the car will hold its rated efficiency well across most driving patterns. -
What engine is in the 2005 Cadillac Armored Deville?
The 2005 Cadillac Armored Deville has a 4.6-liter 8-cylinder engine (EPA description: 275HP). -
What transmission and drivetrain does the 2005 Cadillac Armored Deville have?
The 2005 Cadillac Armored Deville comes with a automatic 4-spd transmission and front-wheel drive. -
How does the 2005 Cadillac Armored Deville compare to the best car in its class?
The most efficient car in the Large Cars class for the 2005 model year is the Chevrolet Malibu Maxx at 23 combined MPG. The Cadillac Armored Deville returns 15 MPG, a gap of 8 MPG. If you are comparing on fuel economy alone, the class leader is worth a look. -
Does the 2005 Cadillac Armored Deville qualify for the gas guzzler tax?
Yes. The federal Gas Guzzler Tax applies to passenger cars rated below 22.5 combined MPG, and the 2005 Cadillac Armored Deville falls below that threshold. The tax is paid by the manufacturer at the point of sale and is built into the sticker price, so you will not see a separate line item at the dealership. Pickup trucks and SUVs are exempt from this tax even when their efficiency is lower.
Source: U.S. EPA fuel economy dataset. Annual fuel cost figures assume 15,000 miles of driving per year and a 55% city, 45% highway split. Real-world mileage varies with driving conditions, vehicle maintenance, fuel quality, and driver behaviour.