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By Andy Enright
Introduction
Fast Audi coupes have an unenviable task. It doesn't usually take too long before the most famous car the Ingolstadt company ever built, the ur-Quattro , is brought into the comparison and facing down legends is a big ask. The Audi RS5, it's fair to say, has never really got close to eclipsing its grand daddy, but put the two cars together on a test track and you'd have to wonder what Audi has to do.
The RS5 offers a huge slug of power, quite stupefying build quality and equipment as well as a charismatic V8 soundtrack. With engines increasingly being downsized, the RS5 might be one of the last of this sort of vehicle. Used examples are now starting to appear in meaningful numbers and, if you're prepared to work at it, bargains are available.
Models
2dr coupe (4.2 petrol [RS5])
History
Audi introduced the A5 coupe in 2007 and as soon as it arrived rumours began circulating of a go-faster version in the pipeline. The really quick RS models tend to be rationed across the model range, so we had quite some time to wait before Audi's go-faster division, quattro GmbH, treated the A5 to the full muscle makeover. The wraps came off the RS5 at the 2010 Geneva Auto Salon, Switzerland's annual pageant of the state of the automotive art, and first impressions were promising.
Motive power came from a normally-aspirated 444bhp V8 which deployed its quattro all-wheel drive via a seven-speed twin-clutch gearbox. The RS5 also featured a revised version of the Audi's four-wheel drive system, with a new centre differential and a new torque vectoring system (which brakes individual wheels), plus the option of a sport rear differential. The first cars were rolled out to the press shortly thereafter and the reception was decidedly lukewarm. Sales weren't stellar either and the RS5 limped along as the poor relation of Audi's flagship sports line. A significant update was announced in February 2012. With sharper styling and better efficiency, the 'new' RS5 looked to relaunch the model.
What You Get
The standard Audi A5 is a beautiful and understated car but whether you could pay either complement to the RS5 is open to debate. Understated it certainly isn't. Aggressive air intakes and a matt aluminium splitter mark out the front end, the wheelarches bulge imposingly and at the rear are two of the largest exhausts you'll have ever seen mounted either side of a large diffuser. There's a spoiler in the tailgate that extends at 75mph, tucking itself away again when you drop below 50mph, so even if you aren't breaking the speed limit, the police will know that you have been. To say the RS5 chassis is merely advanced would be to do it a disservice. The car features the latest quattro all-wheel-drive technology with a crown-gear centre differential and Audi's sport differential between the rear wheels. Under normal conditions, power is distributed 40:60 between the front and rear wheels but the crown-gear differential can automatically send as much as 70% forward or 80% rearward as the situation dictates. The sport differential then distributes power between the two rear wheels to further enhance stability and traction. The Dynamic Ride Control interlinks each of the car's shock absorbers with its counterpart on the opposite corner of the vehicle via a central valve and is calibrated to provide extra damping force when required. The driver can select Comfort, Dynamic and Sport modes according to the firmness of the damping required. The car rides 20mm lower than a standard A5 on its 19" alloy wheels.
What You Pay
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What to Look For
Make sure the car is in perfect condition. There's no reason why it shouldn't be, as it will be within warranty, but any dents, scratches or interior damage will knock values hard. It's a buyers market right now. Check for crash damage at the front, and inspect the tyres for signs of uneven wear. The V8 engine is a tough thing with few faults reported and the S-tronic twin-clutch gearbox is also surprisingly durable. Otherwise insist on a full service record.
Replacement Parts
(based on a 2011 RS5 - ex Vat) Tyres are around £250 a corner and you'll need to spend around £300 on a replacement clutch assembly, while brake pads are around £150 for the front pair and £100 for the rears. Door mirrors are £150 per unit.
On the Road
Audi has been turning more and more to turbocharged powerplants in its faster cars but the RS5 sticks with good old cubic capacity. Mounted at the front of its quattro all-wheel-drive chassis is a 4.2-litre V8 incorporating technology from the V10 FSI unit in the R8 supercar. The peak power output of 444bhp is achieved at the engine's 8,250rpm maximum and 430Nm of torque is on stream between 4,000 and 6,000rpm. Against the clock, the RS5 will blast to 62mph in 4.6s and would comfortably exceed 155mph were the artificial limiter ever to doze off on the job. S-tronic dual clutch gearbox technology is rapidly becoming as commonplace as quattro all-wheel-drive across Audi's various model lines and the fact that it's fitted to the RS5 underlines the faith the manufacturer has in it. This particular unit is a seven-speed transmission specially strengthened to cope in the company of the RS5's formidable engine. With two clutches working on different sets of gears, the technology is able to pre-engage the gear it thinks will be selected next. This makes for lightening fast shifting via the wheel-mounted paddles or by nudging the gear lever. There are Automatic, Comfort and Dynamic modes to choose from when the doing the shifting for you and a launch control setting which will get you close to optimum acceleration off the line.
Overall
The Audi RS5 is a very interesting vehicle. Is it as talented a sports coupe as a BMW M3 or a Mercedes C63? In pure dynamic terms, it's not that close. Despite Audi's best efforts there's too much understeer and too little involvement from the chassis to make a really convincing sporting coupe. The firm ride of the RS5 also denies it a place at the top table of GT-style cruisers. While this might make it a tough car to recommend as a new purchase, used RS5s have much to be said for them. They tend to be priced comparatively keenly and they also tend not to have been driven quite as hard as the equivalent rear-wheel drive BMW and Mercedes models. Couple that with Audi's brilliant build quality and you have an intriguing used proposition. As long as you can live with the fact that it's not the sharpest steer in its class, there's a lot to like. The plus points? It's apocalyptically rapid, has a charismatic engine and the interior feels an event every time you get in. Remember; it's a buyer's market right now so don't ever pay top book for an RS5. Haggle hard and you'll be able to scalp a real deal.
