bit old, but I've only just found it on pistonheads - http://www.pistonheads.com/news/default.asp?storyId=17165

Quote:

Another day, another rumour surrounding the power-freaks at Audi.

This time there are reports that the German firm is considering stuffing a Lamborghini V10 into the A5, presumably just because they can.

The result will be an RS5 with an M3 annihilating 500bhp going through all four wheels.

Audi is said to be moving the RS4 and RS5 apart like two naughty schoolchildren, and giving the RS5 a different, even more ferocious, engine.

Leaving nothing to chance in its forthcoming battle with the M3 coupe, word has it Audi will look to the 5.0 litre Lambo Gallardo V10 engine which has 500 bhp in the small supercar.

This engine has already been boosted to 580 bhp in the soon-to-arrive Audi RS6, albeit with twin turbochargers, prompting some commentators to suggest Audi may have gone too far.

No official details have been launched for the RS5 but expect it to feature pumped-up bodywork like the RS6, with wheel-arches reminiscent of the original ur Quattro.

Sounds god but it's getting silly now RRS TDV6 Gone but still around

SL55 AMG
760Li Alpina
BMW 320D Coupe M Sport
BMW 320D M Sport
And A Van For The Dog

Oh and i love the girlzzzzzzzzzz!!!

says the man with an SL55 and 760iL

OK ok i mean small ish cars with all that power no need! Maybe get 500BHP but will do what 0-60 in 4.5 like the rest? RRS TDV6 Gone but still around

SL55 AMG
760Li Alpina
BMW 320D Coupe M Sport
BMW 320D M Sport
And A Van For The Dog

Oh and i love the girlzzzzzzzzzz!!!

I dread to think what Gordie Broon and his team will be looking for in tax and fuel duty in 18 months time, I bet a V10 Lambo powered RS5 will not be cheap to tax and fuel! A Carbon Footprint is the mark a lump of coal makes when it's dropped on the ground.

TDv8 HSE - Stornoway Grey with ebony and straight grain walnut wood-a-like interior with towpack, Tasmods. The best car I have ever owned
Now departed - Giverny Green TDv6SE with Aspen and Parchment interior - nearly the best car I have ever owned
Staying - Epsom Green Defender 90 for playing off road

I wonder how long it will be until we're all looking at 600bhp superminis to take to the shops and supercars are putting out 1500bhp as a matter of course...