like to turn their performance all the way up to eleven. Well that's why you can get

a Golf GTI Performance Pack, A Jaguar XFR S and even a Porsche Cayenne Turbo S. However,

are these highly tuned models really worth the extra cash? To find out I'm going to be

comparing them on track to their standard versions. In this video we have the Porsche

Cayenne Turbo against the Cayenne Turbo S. The normal Porsche Cayenne Turbo has a 4.8-litre

V8, with 493bhp and 700Nm of torque. It can hit 62mph in just 4.7 seconds and goes on

to an electronically limited top speed of 155mph. It costs £89,324. The Cayenne Turbo

S cost £20,460 more but for that you get an extra 49bhp and 50 Nm of torque. The 0-62

time forwards by 3 tenths of a second and the top speed increases to 175mph. More importantly

the S gets extra goodies in the shape of active torque vectoring, clever active anti roll

control system. But does all this make the standard Cayenne Turbo feel somewhat lacking

when you take it onto the alien environment of a race track? We've got the car with the

gearbox in the sport setting, using the paddles third gear into this first corner, first thing

you notice is that for a big heavy car that weighs over two tonnes it's remarkably little

roll and you can feel the car just wriggling and working at keeping itself planted to the

road. This car hasn't got the active anti roll bar system, hasn't got the torque vectoring

system and hasn't got ceramic brakes. So it's a pretty standard Turbo in terms of its dynamic

set up. Even then, it's pretty accomplished for a big car. It doesn't feel massively quick

on the track but them tracks do sap away performance if that makes sense - it probably feels quite

fast on a road. Brakes are quite strong, body control is really good for a big SUV. It's

nice natural feeling for a car of this size, and really it's quite a simple car to drive

on the track you just really have to brake in a straight line get it turned in and then

just manage the weight and get on the throttle. It's not a hard car to drive quickly, there

isn't really much you can do to drag more performance out of it. Now we come to the

last corner. It's quite an easy straightforward car to drive. The Cayenne Turbo finished with

a flying lap of 1 minute 14.1 seconds. But can the Cayenne Turbo S go any quicker? So

if you want the ultimate in Porsche SUV you need this car the Turbo S. It's got extra

power and you can feel that straight away but it's not just the extra power, this car

comes as standard with Porsches PTV torque vectoring system. And it also active anti

roll bar system which tightens body roll even more. You can feel that straight away in the

first couple of corners because you've got quite a lot of change of direction there and

you can feel the active anti roll bars are tying the body control down just that little

bit better than the standard car. In terms of the power, you can feel it but it's not

a massive difference but it does feel a bit quicker. Traction's good as well - that torque

vectoring is just, for a big car, it's quite amazing how it defeats physics on the circuit.

There's no finesse to it, but it's just a case of it just turns in and grips and goes

so much better than you would imagine a car of this height and weight and size would do.

Through here, it does feel better than the standard car. All that vectoring of the torque

and just roll bars as well. Just feels a bit sharp. Not a lot in it in the brakes although

this car has got the ceramic brakes. Coming around the last two corners, it's a big car

but it's really quick and quite well sorted. In the end, the Cayenne Turbo S was four tenths

of a second faster around the test track. So is it worth the extra money? Well you can

definitely feel the active roll control system working, but you can fit this as an option

to the standard Turbo. And for most people, the standard Turbo is more than fast enough

for a large SUV.