Lightweight and powerful: the 3.0 TFSI
The heart of the S models is a newly developed V6 engine with petrol direct injection and turbocharging. The 3.0 TFSI has an output of 260 kW (354 hp); its 500 Nm (368.8 lb‑ft) of torque is available across a wide range of speeds from 1,300 to 4,500 rpm. The engine outstrips its predecessor in terms of power and torque, while simultaneously offering significantly lower fuel consumption and weight.
As on every Audi S model, the power of the 3.0 TFSI is transmitted to the road by quattro permanent all-wheel drive. During normal driving, the selflocking center differential funnels 60 percent of engine torque to the rear axle and 40 percent to the front. Depending on the operating situation, it can distribute up to 70 percent to the front axle or up to 85 percent to the rear. The wheel-selective torque control based on an intelligent software function rounds off the quattro drive train. For dynamic cornering, the wheels on the inside of the bend are slightly braked before they can slip. This makes handling more precise, agile, and stable. A sport differential available as an option improves the handling further by actively distributing the forces between the rear wheels.
Intelligent dynamics: suspension
The new Audi S4 and S4 Avant handle corners of all kinds with aplomb – whether on a racetrack or a mountain pass. For fast motorway driving, both models feature impressive straight-line stability. This performance is down to the newly developed suspension. The five-link suspension on the front and rear axle precisely separates the longitudinal and transverse forces, thus ensuring optimum handling in all driving situations. Like the electromechanical power steering, both are designed to be very lightweight. Variable speed-dependent dynamic steering is available as an option.
Sporty understatement: design
The appearance of the new S4 models is subtly understated. At the front, the Singleframe grille and the accentuated horizontal lines underline the width. The bumpers and air inlets are prominently profiled. Many of the add-on parts are painted in finely graduated matt gray tones, accentuated with chrome trimming at selected points.
The exterior mirror housings in aluminum look are a visual highlight on the clear flowing side lines of the 4.74 meter long S4 (15.6 ft). The strongly profiled sill trims also give both models a striking appearance. On the tailgate, a separating edge provides targeted aerodynamics. The S‑specific rear bumper integrates a black honeycomb grille, an S‑typical diffuser clip, and the four tailpipes of the dual-branch exhaust system. Intelligent composite construction characterizes the body. This makes it exceptionally torsionally rigid, safe, and lightweight. It is the basis for the low unladen weight of the car. The sedan with quattro drive as standard tips the scales at 1,630 kilograms (3593.5 lb), the Avant at 1,675 kilograms (3692.7 lb).
Even the standard equipment is extensive. In addition to the features already mentioned, for both body versions it includes LED headlights and LED rear lights with dynamic turn signal. The Avant features an electrically controlled tailgate and luggage compartment cover, as well as anodized aluminum roof rails.
The optional equipment available underlines the high-tech nature of the new S models – for example, Matrix LED headlights, head-up display and sensor control for the tailgate on the Audi S4 Avant.