2015 Cadillac CTS Sedan Specs
5 powertrain configurations on federal record for the 2015 Cadillac CTS Sedan: 3.6L 6-cyl Regular Gasoline; 3.6L 6-cyl Premium Gasoline; 2.0L 4-cyl Regular Gasoline, in All-Wheel Drive and Rear-Wheel Drive, rated up to 24 MPG combined by the EPA.
Source: EPA federal records (fueleconomy.gov) · Updated 2026-10-26 · By CarWhere Research
| Engine | Transmission | Drivetrain | City | Highway | Combined |
|---|---|---|---|---|---|
| 3.6L 6-cyl Regular Gasoline | Automatic (S6) | All-Wheel Drive | 18 | 26 | 21 |
| 3.6L 6-cyl Premium Gasoline | Automatic (S8) | Rear-Wheel Drive | 16 | 24 | 18 |
| 3.6L 6-cyl Regular Gasoline | Automatic (S8) | Rear-Wheel Drive | 18 | 28 | 22 |
| 2.0L 4-cyl Regular Gasoline | Automatic (S6) | All-Wheel Drive | 19 | 27 | 22 |
| 2.0L 4-cyl Regular Gasoline | Automatic (S6) | Rear-Wheel Drive | 20 | 30 | 24 |
CTS Sedan by year
Buying a used CTS Sedan? Specs are the easy half.
then check the specific car: the Full VIN Report shows that VIN's factory build, recall record, and market history before you pay for it.
Frequently asked questions
What engines does the 2015 Cadillac CTS Sedan have?
3 engines on federal record: 3.6L 6-cyl Regular Gasoline; 3.6L 6-cyl Premium Gasoline; 2.0L 4-cyl Regular Gasoline, offered with Automatic (S6), Automatic (S8) and All-Wheel Drive or Rear-Wheel Drive. The full per-configuration table is above.
What gas mileage does the 2015 Cadillac CTS Sedan get?
EPA combined ratings run 18–24 MPG depending on configuration — the table above shows city/highway/combined for each engine, transmission, and drivetrain.
How do I get the specs for my exact VIN?
These are the federal-record configurations for the 2015 Cadillac CTS Sedan overall. For one specific vehicle — its exact engine, trim, factory options, and original window sticker — decode the 17-character VIN free at carwhere.com/tools/vin-decoder.
Where does this data come from?
The U.S. EPA's public vehicle dataset (fueleconomy.gov) — the federal record of every US-market configuration since 1984 — refreshed 2026-10-26. Public-domain data; republish with attribution to CarWhere (carwhere.com).