2015 Cadillac CTS SedanFuel Economy & MPG Ratings
Gasoline Midsize CarsRear-Wheel Drive
City
20
MPG
Highway
30
MPG
Combined
24
MPG
Trim Comparison
Automatic (S6)
Regular
City
20
Hwy
30
Comb
24
Fuel cost: $2,800/yr
Automatic (S8)
Regular
City
18
Hwy
28
Comb
22
Fuel cost: $3,050/yr
Automatic (S8)
Premium
City
16
Hwy
24
Comb
18
Fuel cost: $4,550/yr
| Trim | Engine | City | Hwy | Combined | Fuel Cost/yr |
|---|---|---|---|---|---|
| Automatic (S6) | Regular | 20 | 30 | 24 | $2,800 |
| Automatic (S8) | Regular | 18 | 28 | 22 | $3,050 |
| Automatic (S8) | Premium | 16 | 24 | 18 | $4,550 |
Annual Fuel Cost
$2,800
Based on gasoline at $3.67/gal, 15,000 miles/year
5-Year Fuel Savings
$-2,000
vs. average new vehicle
EPA Fuel Economy Score: 6/10
GHG Score: 6/10
Environment
- CO₂ Tailpipe Emissions
- 374 g/mile
- Annual Petroleum Consumption
- 12.4 barrels
Specifications
- Engine
- 3.6L 6-cyl
- Transmission
- 8-speed Automatic
- Drivetrain
- RWD
- Body Style
- Sedan
- GVWR
- Class 1 (≤6,000 lbs)
Source: EPA fuel economy data & NHTSA vPIC. Specifications reflect the most common trim configuration.
Engine & Efficiency Details
Source: EPA fueleconomy.gov
- Engine Size
- 2L, 4-cylinder
- Induction Type
- Direct Injection
- Fuel Type
- Regular Gasoline
Annual Fuel Cost by State
Prices as of week ending May 18, 2026 · Source: EIA
National AvgEPA default
$4.490/gal$2,806/yr
California
$5.957/gal$3,723/yr
Texas
$3.888/gal$2,430/yr
Florida
$4.136/gal$2,585/yr
New York
$4.522/gal$2,826/yr
Ohio
$4.510/gal$2,819/yr
Washington
$5.591/gal$3,494/yr
Colorado
$4.618/gal$2,886/yr
Minnesota
$4.344/gal$2,715/yr
Massachusetts
$4.448/gal$2,780/yr
| State | Gas Price | Annual Cost | vs. National Avg |
|---|---|---|---|
| National AvgEPA default | $4.490/gal | $2,806/yr | — |
| California | $5.957/gal | $3,723/yrHIGHEST | +$917 |
| Texas | $3.888/gal | $2,430/yrLOWEST | $-376 |
| Florida | $4.136/gal | $2,585/yr | $-221 |
| New York | $4.522/gal | $2,826/yr | +$20 |
| Ohio | $4.510/gal | $2,819/yr | +$13 |
| Washington | $5.591/gal | $3,494/yr | +$688 |
| Colorado | $4.618/gal | $2,886/yr | +$80 |
| Minnesota | $4.344/gal | $2,715/yr | $-91 |
| Massachusetts | $4.448/gal | $2,780/yr | $-26 |
Calculated at 15,000 miles/year (EPA standard assumption) using 24 MPG combined. Regular gasoline prices. Actual costs vary.
Related
Cadillac CTS Sedan MPG History
See how this model's fuel economy changed by year