Apologies for the necro but something isn't quite right here and registered just to comment about it
This website is great for finding the fantastic music used on top gear but struggling with the part where JC loves the Audi's engine noise
The track sample is 63 seconds of metal directly after the Porsche has been driven around corners to the sound of U.N.K.L.E - Natural Selection (Instrumental) for 57 seconds
I believe it's a Pierre Langer piece, it's pretty similar to Thunder Bike / Hosedown but unsure about that beat, although I haven't bought his tracks released post Jul-12
The next extract is noted as being from Trentem?ller - Take Me Into Your Skin which is when JC concludes that both cars are good and then it's straight into Tears of Joy
The numbers also seema bit off but I've spent an hour cataloguing music tonight and need sleep now!