While Europe will receive the oil-burner S4 TDI, the rest of the world will get the delightful gasoline-powered S4.
Its 3.0-liter V6 fed via two turbochargers are good for a total power output of 354 hp, only 7 more than the TDI version. Even the torque is lower at 500 Nm 368.8 lb-ft) instead of 700 Nm (516 lb-ft). But still, the gasoline-powered S4 Avant can cover the 0-100 kph (62 mph) in the same 4.9 seconds as its TDI sibling.

For the transmission, Audi installed an 8-speed automatic gearbox with a torque converter that sends the power to an all-wheel drive system but more towards the rear axle. In the event of wheelspin, it redistributes the power to the wheels with the most traction. A torque vectoring system is used to improve stability, with minimum brakes. An optional rear differential is offered for a better torque distribution between rear wheels.

Inside the cabin, there are two bucket seats in the front and a bench for three in the rear. Unfortunately, Audi didn’t put more contoured rear seats. The S4 TFSI Avant has a 505 liters (17.8 cu ft) trunk space, enough for normal activities. Of course, the rear seats can be folded down so the maximum storage capacity will reach 1510 liters (53.3 cu ft)

The station-wagon version of the S4 TDI has the same technical platform as its sedan sibling.
The 3.0-liter V6 turbodiesel is the same, with 347 hp and 700 Nm (516 lb-ft) of torque. The transmission is the same Tiptronic with 8 speeds which is using a normal torque converter, not the dual-clutch technology seen in other DSG gearboxes. The sports center differential is a self-locking type and can redistribute the torque between the front and rear wheels, but most of the time it will send it to the front wheels.

The interior for the estate was made with family needs in mind. The front seats are bucket-type but the rear bench is almost completely flat. The S4 sedan offers more head-room for the rear-seats occupants. The trunk is only 420 liters (14.8 cu-ft) but can exceed 1435 liters (50.6 cu-ft) with the rear seats folded down.

The Audi MMI has the same large display in the middle of the dashboard. It supports Android Auto and Apple CarPlay and can be accessed either via a touch-screen.

From the outside, an S4 can be easily recognized by the honeycomb front grille structure surrounded by a chrome line around it. The headlights are LED fitted as standard. For the S4, Audi offers standard 18” wheels with 245/40 tires. The customers can choose for 19” wheels fitted with 255/35-series tires.

Performances are very good for this oil-burner with a 0-100 kph (62 mph) in 4.9 seconds. Top speed is a limited 250 kph (155 mph).

Along with the S4 Sedan, Audi wanted the Avant also to be redesigned for 2012, giving it a facelift that would keep it going for another couple of years.
The most important changes happened at the front, where the new headlights have a new shape and arrangement inside. LED DRL and Xenon are now standard, with the Xenon Plus option costing a little extra but adding adaptive lights to the package. The interior was also rethought bringing new steering wheel options and materials and offering more customization options than ever. As for powertrain options, they remain basically the same with a 3-liter TFSI engine that develops 333 HP shared by two gearboxes.

The latest S4 Avant switched its N/A V8 engine with a supercharged V6.
Sharing its base with the new Audi A5 Coupe (Audi Modular Longitudinal Platform), the new S4 Avant was hailed by the critics with better stability and improved weight distribution. This was possible thanks to the reduced front overhang and rearwards position of the powertrain. The new model featured a longer wheelbase than its previous generation Avant (with 117 mm) - as well as lightweight steel components - and was fitted with plenty of new technological features: MMI system, Servotronic steering or electronic park brake.

In 2005, Audi introduced the new generation of the S4.
It was available as a sedan, convertible and station-wagon, named Avant. It was a true factory sleeper.

At the beginning of the 2000s, Audi started to built faster cars that looked just like the other regular sedans from its lineup. Soon, it evolved by offering station-wagons with big and powerful engines.

From the outside, few elements could differentiate an S4 from a regular A4 model. There were few clues though, such as the chromed rim around the grilles (both the upper and the lower one) bigger wheels and tires and dual exhaust in the back. From the sides, the satin-silver door-mirrors were another distinctive element for the A4.

Inside, the front seats were signed by Recaro. They were the sport-bucket type with high bolstering for those who like to go fast on the corners even with a station-wagon. On the instrument cluster, Audi painted the S4 logo on the tachometer dial, so the driver knew that that was not an ordinary car.

In the back, there was room for three adults, but with limited shoulder room for all three and less legroom for the one in the middle. Due to the all-wheel-drive system, named Quattro by the Germans, there was a transmission tunnel that ran through the floor all the way to the rear differential. The trunk space was big and it could have been extended by folding the rear seats either completely or by a split 60:40 way.

The 4.2-liter V8 unit was the biggest engine ever installed on an A4 bodywork to the moment the S4 was introduced to the market. It was available with either a 6-speed manual or a 6-speed automatic.

The third generation Audi S4 model debuted in mid-2003 and was available to the large public in three body styles - sedan/saloon, estate/wagon and cabriolet.
Based on A4’s brand new Volkswagen Group B6 platform, the S4 Avant benefited from the same wheelbase length as the S4 sedan and featured the same changes in terms of exterior design: wider grille, lower door trims and revised mirrors. This generation S4 Avant was fitted with a new 344-PS 4.2 L V8 engine (replacing the 2.7L unit from the 1997 S4) and came with a choice of two transmission: standard 6-speed manual and 5-speed tiptronic. This model was replaced by a B7 platform-based Audi S4 in 2005.

The Audi S4 (or the Audi B5) was very similar to the A4 model, however, it had a lower suspension, beautiful 17-inch wheel, chrome accents, and a color coated grille with a sporty feel.
The car was equipped with a powerful 2.7-liter V6 engine that developed 265 hp, with a top speed of 150 kph, with the power transmitted to all of the 4 wheels, or how Audi would say, it had the Quattro system. Many have said that the S4 was rather a racing car for the road.

The S4 had 4 airbags, 2 for the front passengers and 2 for the rear passengers. It used a Concert surround sound system and it was a pleasure to drive it and listen to some music at the same time.

The standard came with a 6-speed manual transmission and an optional 5-speed automatic gearbox.

The S4 released in 1997 was already at its 2nd generation, and besides the saloon, an estate version was also revealed.

The B5 was fitted with a 4-wheel independent suspension, with the front one being a multi-link and the rear one was an unequal length double wishbone design.

The brake system of the S4 was performant, being equipped with ventilated discs for both front and rear and 2-piston brake calipers for the front and single-piston calipers in the rear. The B5 also had ABS, EBD, EDL, and ESP.