2021 Audi A4 Specifications Overview
The 2021 Audi A4 is certified across 3 configurations with 2L Gas-Electric Hybrid Engine powertrain options. Available drivetrain layouts include All-Wheel Drive paired with Automatic (AM-S7). EPA classified under the Compact Cars / Small Station Wagons size category. Platform architecture belongs to the 5th Generation (B9) vehicle family.
Certified Powertrain & Transmission Configurations (3)
Official laboratory certification specifications for each factory engine, transmission, and drivetrain permutation
| Configuration / Model | Engine & Displacement | Cylinders | Induction / Tech | Transmission | Drivetrain | Fuel System |
|---|---|---|---|---|---|---|
| A4 quattro Compact Cars | 2L Gas-Electric Hybrid Engine | 4 | Hybrid Electric Assist | Automatic (AM-S7) | All-Wheel Drive | Premium |
| A4 S line quattro Compact Cars | 2L Gas-Electric Hybrid Engine | 4 | Hybrid Electric Assist | Automatic (AM-S7) | All-Wheel Drive | Premium |
| A4 allroad quattro Small Station Wagons | 2L Gas-Electric Hybrid Engine | 4 | Hybrid Electric Assist | Automatic (AM-S7) | All-Wheel Drive | Premium |
Regulatory Classification & Safety Architecture
Federal classification standards and standard active driver assistance system capabilities
EPA Regulatory Size Class
- Compact Cars
- Small Station Wagons
NHTSA NCAP Body Formats
- 2021 Audi A4 4 DR AWD
Active Safety Technology
Evaluated under federal safety compliance standards.
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.