2015 Cadillac ATS Specs
6 powertrain configurations on federal record for the 2015 Cadillac ATS: 3.6L 6-cyl Regular Gasoline; 2.0L 4-cyl Regular Gasoline; 2.5L 4-cyl Regular Gasoline, in Rear-Wheel Drive and All-Wheel Drive, rated up to 25 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) | Rear-Wheel Drive | 18 | 27 | 22 |
| 3.6L 6-cyl Regular Gasoline | Automatic (S6) | All-Wheel Drive | 18 | 26 | 21 |
| 2.0L 4-cyl Regular Gasoline | Manual 6-spd | Rear-Wheel Drive | 19 | 29 | 23 |
| 2.0L 4-cyl Regular Gasoline | Automatic (S6) | Rear-Wheel Drive | 21 | 29 | 24 |
| 2.0L 4-cyl Regular Gasoline | Automatic (S6) | All-Wheel Drive | 20 | 27 | 23 |
| 2.5L 4-cyl Regular Gasoline | Automatic (S6) | Rear-Wheel Drive | 21 | 32 | 25 |
ATS by year
Buying a used ATS? Specs are the easy half.
Check which ATS years to avoid (federal complaint and recall records), 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 ATS have?
3 engines on federal record: 3.6L 6-cyl Regular Gasoline; 2.0L 4-cyl Regular Gasoline; 2.5L 4-cyl Regular Gasoline, offered with Automatic (S6), Manual 6-spd and Rear-Wheel Drive or All-Wheel Drive. The full per-configuration table is above.
What gas mileage does the 2015 Cadillac ATS get?
EPA combined ratings run 21–25 MPG depending on configuration — the table above shows city/highway/combined for each engine, transmission, and drivetrain.
Is 2015 a good year for the Cadillac ATS?
Specs don't answer that — the federal complaint and recall record does. See the Cadillac ATS year-by-year reliability verdicts at carwhere.com/research/years-to-avoid/cadillac/ats, built from NHTSA data.
How do I get the specs for my exact VIN?
These are the federal-record configurations for the 2015 Cadillac ATS 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).