Is the Audi A4 rear wheel drive?

The Audi A4 primarily features a front-wheel-drive layout, but it is also available with Audi's quattro all-wheel-drive system, which enhances traction and stability. While some performance-oriented versions of the A4, like the Audi S4, may offer rear-wheel bias in their all-wheel-drive systems, the standard A4 itself is not rear-wheel drive.