The Audi S4 Avant's interior is one of Audi's more conventional designs, though our test car's Magma Red Nappa leather upholstery provided a pleasant splash of color. The material quality is excellent. The brushed metal finish on the dashboard is genuine and stunning, while the suede door inserts add a sporty touch. The Audi S4 Avant Quantum Grey, a color extremely similar to the well-known Nardo Grey, was used to finish our tester. Autonomous emergency braking with pedestrian recognition comes standard on all 2021 Audi S4 models, as are lane-keeping assist, blind-spot monitoring, collision avoidance aid, rear cross-traffic alert, an active bonnet, and an exit warning system.
In addition to curtain airbags, the S4 offers side airbags for both rows. Dual front airbags are also included. A black exterior kit and a panoramic sunroof are available as options. You can also upgrade to LED matrix headlights with dynamic cornering lights and headlight washers from conventional LED headlights with static cornering lights.
A quattro sport differential and dynamic variable-ratio steering are among the other performance features available.
Swerve assist is also available on the S4, which uses a little amount of steering force to adjust your steering angle if you suddenly take evasive action. This works at speeds ranging from 30 to 150 km/h.
The piano black trim on the center console should be removed and replaced with more of that wonderful metal, in our opinion. Piano black trim has become a crutch for far too many automakers, and it quickly becomes coated with dust and smudges.
The dimpled leather on the shifter is a pleasant surprise. The interior plastics are also pleasant to the touch, even in places where you might expect them to be firm, such as the lower portion of the door trimmings.
The S4 has a single 10.1-inch monitor, unlike some contemporary Audis such as the E-Tron and Q7, which have two screens on their centre stacks. The rotary controller has been removed from the A4 range as part of a 2020 upgrade.
When you're on the highway, the map view expands to show the road network and nearby towns, which is a useful feature.The steering is superbly weighted, instilling even more confidence, and the adaptive dampers provide a comfortable ride in Dynamic mode, despite the ride being naturally rather harsh.
The S4 has a fantastic snarl, especially when driven in Dynamic mode, where the exhaust snaps, crackles, and bursts. It's a sonic treat. Around town, Dynamic mode is likewise very pleasant, rarely holding gears for longer than necessary. The S4's comfort does take some of the edge off, but it still feels active.