Vehicle crash and safety data is provided by NHTSA, the National Highway Traffic Safety Administration. NHTSA testing was established by Congress to reduce highway deaths and injuries.
The 2021 Audi A4 is a compact luxury sedan that competes with the Mercedes-Benz C-Class, BMW 3 Series, and Lexus IS. It is powered by a standard 201-hp, turbocharged 2.0-liter four-cylinder engine mated to a seven-speed dual-clutch automatic transmission and Quattro all-wheel drive.
Two trims are available: Premium and S line Premium.