2018 Cadillac XTS Specifications Overview

The 2018 Cadillac XTS is certified across 5 configurations with 3.6L 6-Cylinder Engine powertrain options. Available drivetrain layouts include Front-Wheel Drive, All-Wheel Drive paired with Automatic (S6). EPA classified under the Large Cars / Special Purpose Vehicle 2WD size category.

Engine / Motors
3.6L
3.6L 6-Cylinder Engine
Drivetrain Options
2 Drivetrains
Front-Wheel Drive, All-Wheel Drive
Transmissions
S6
Automatic (S6)
Vehicle Classification
Large Cars
Official EPA regulatory class

Certified Powertrain & Transmission Configurations (5)

Official laboratory certification specifications for each factory engine, transmission, and drivetrain permutation

Configuration / Model Engine & Displacement Cylinders Induction / Tech Transmission Drivetrain Fuel System
XTS Large Cars 3.6L 6-Cylinder Engine 6 Naturally Aspirated Automatic (S6) Front-Wheel Drive Regular
XTS Hearse Special Purpose Vehicle 2WD 3.6L 6-Cylinder Engine 6 Naturally Aspirated Automatic (S6) Front-Wheel Drive Regular
XTS Limo Special Purpose Vehicle 2WD 3.6L 6-Cylinder Engine 6 Naturally Aspirated Automatic (S6) Front-Wheel Drive Regular
XTS AWD Large Cars 3.6L 6-Cylinder Engine 6 Naturally Aspirated Automatic (S6) All-Wheel Drive Regular
XTS AWD Large Cars 3.6L 6-Cylinder Engine 6 Naturally Aspirated Automatic (S6) All-Wheel Drive Premium
EPA Certification Standards: Powertrain and transmission specifications represent official laboratory configuration records filed under 40 CFR Part 600. For detailed fuel economy ratings, electric range, and annual fuel costs, explore the 2018 Cadillac XTS MPG & Range Report.

Regulatory Classification & Safety Architecture

Federal classification standards and standard active driver assistance system capabilities

EPA Regulatory Size Class

  • Large Cars
  • Special Purpose Vehicle 2WD

NHTSA NCAP Body Formats

  • 2018 Cadillac XTS 4 DR FWD
  • 2018 Cadillac XTS 4 DR AWD

Active Safety Technology

Evaluated under federal safety compliance standards.

Related Official Reports for 2018 Cadillac XTS

Cross-reference fuel economy, safety ratings, owner defect complaints, and recall notices

Official US Government Data Provenance

Powertrain, transmission, drivetrain, and regulatory classification specifications on this page are derived directly from the United States Environmental Protection Agency (EPA) and National Highway Traffic Safety Administration (NHTSA) official laboratory certification registries.

Local Production Store Compiled: August 2026 • Deterministic Audited Dataset • Zero Dynamic External API Runtime Latency.