Model History:

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Audi's RS division short for Renn Sport, has been responsible for some of the greatest performance estates over the years, from the legendary Porsche developed RS2 to the outrageous V10 C6 RS6. The recipe has been centered around obtaining the perfect balance between performance and refined practicality, creating models that are just as suitable as a daily driver as they are at challenging top tier sports cars of their era. 

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At the heart of all of this is the RS4 because it is the longest-running model in the RS line, first commercialised in 2000 with the turbo-charged six cylinder B5. It’s successor the B7 RS 4 is an almost complete departure from previous Audi "RS" cars, as it was initially available as a four-door saloon; with a five-door  Avant, and two-door four-seat Cabriolet versions arriving later. The same understated styling remained, but the forced compression engine was replaced by a naturally aspirated, high-revving V8 producing 420PS.  It was only available with a manual gearbox which for driving enthusiasts was much appreciated at the time. Built between 2006 to 2008 inclusive, approximately 10,000 B7 RS 4s were built.

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One of the most enticing elements of the B7 RS4 is the powertrain. The 4.2 litre engine started life as that found in the S4, with the RS4 gaining modified pistons and conrods, a new crankshaft and bearings, and new cylinder heads giving an additional 60 PS making it almost identical to the engine found in the Audi R8 supercar. The result was an extremely responsive engine with great torque and linearity, revvingto an impressive 8,250 rpm,with a race car V8 raucous exhaust note.

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Combine this fantastic powertrain with Audi's all-wheel-drive Quattro system, as first used in the extremely successfulQuattro rally car; and the acceleration was astonishing with 0-100kph arriving in just 4.7 seconds. The Torsen-based system meant that it was a rear biased power delivery, giving fun and responsive cornering while keeping the all-wheel drive all weather traction and security associated.

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While the engine may be the B7's outstanding feature, the styling did not disappoint. The wide flared wheel arches are the big differentiator from other Avant models but also purposeful allowed for a wider track. Aluminium was used for the flared front wings and bonnet reducing weight. There are also two larger frontal side air intakes (for the two additional side-mounted coolant radiators). 

The interior remains sober and practical but a few clues to the sportiness of this model are visible including the flat-bottomed steering wheel shared with the Lamborghini Gallardo, and the optional full leather Recaro bucket seats.

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The B7 generation remains one of the RS greats, appreciated by many enthusiasts for being the sweet spot of the RS range, simple and compact and propelled by that thunderous V8.

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