Audi Performance & Tuning


S models

Numerous "S" models, from most of Audi's mainstream model ranges have been produced over the years. These cars are recognisable by their "S*badges, and vertical emphasis lines on their front grills.
All Audi "S" models are equipped with Audi's 'trademark' quattro four-wheel drive system as standard. 

Unique internal combustion engines, along with larger, more powerful brakes, stiffer suspension systems, additional exterior body styling, and carbon fibre interior trims set them apart from their related "siblings" of their respective model range.
In the past, some Audi S models competed directly with BMW M and Mercedes-AMG models, such as the B6 Audi S4 4.2 FSI versus the BMW M3 and Mercedes-Benz C32 AMG. 

Since 2010 however, Audi S models have been positioned more as optional engine trims. For instance the base Audi A4 (B8) engine is the 2.0 TFSI turbo four-cylinder, and with the discontinuation of the 3.2 FSI V6, that makes the Audi S4's 3.0 TFSI V6 the performance option (the B8 Audi S4 3.0 TFSI positioned closer to the E90 BMW 335i than the BMW M3). The Audi A6 (C7) no longer has a V8 engine upgrade in the non-S range, with the discontinuation of the C6 Audi A6 4.2 FSI that was offered from 2004–11, one must go to the C7 Audi S6 4.0 TFSI.

Audi "S" models should not be confused with the Audi "S line" models, which feature leather trim, S-line badging, sports steering wheel and sports suspension.

RS models

quattro GmbH, AUDI AGs high performance private subsidiary, creates even higher performance versions, known by their "RS" badging. The "RS" initials are taken from the German:RennSport - literally translated as "racing sport".

RS is Audi's highest performance 'top-tier' trim level, positioned distinctly above the "S" ("Sport") specification level of Audi's regular model range. All "RS" cars pioneer some of Audi's latest and most advanced technology andengineering prowess, therefore, "RS" cars could be described as "halo vehicles". Audi RS cars are some of the most powerful vehicles ever offered by Audi.

The Audi RS6 5.0 TFSI quattro, for instance, is more powerful than the physically larger Audi S8 5.2 FSI quattro.
Available for limited time and only in select markets, on a restricted model range, these "RS" [and "S" models] models are wholly designeddeveloped and produced in-house by Audi AG's high performance private subsidiary company, quattro GmbH, at its Neckarsulm factory.

Unlike Audi "S" models whose interiors well-furnished in order to retain the feel of sport luxury, the interior of Audi "RS" models are often spartan by comparison as the emphasis is more on track performance than luxury. The 2008 Audi RS4 sold in Europe had lightweight racing-style front seats and roll-up windows for the rear doors, although its counterpart sold in the United States has luxurious power-adjustable front seats and power windows for all doors.

Audi "RS" models are considered direct competitors to similar-sized hardcore sport models from BMW M and Mercedes-AMG, whereas the Audi "S" models (as of 2010) have been positioned more as engine upgrades. Taking the 2012 model year for example, the Audi RS5 competes directly with the BMW M3 whereas the Audi S5 competes with the BMW 335i, while the Audi RS6 competes with the BMW M5 and the Audi S6 competes with the BMW 550i. However the Audi RS6 (C6) was never exported to the United States due to emissions regulations, leaving the Audi S6 (C6) as the top performing trim to compete against the BMW M5 (E60) in that market.

There used to be only one RS model in production at a time, but recently Audi has revised its policies and decided to make more than one RS model at a time, claiming that "customers want them, then why not give it to them"
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