Why Do Some Adverts Show 320 bhp And Some 380 bhp?

[im]

For instance this:

http://www.pistonheads.com/classifieds/used-cars/t...

versus this:

http://www.pistonheads.com/classifieds/used-cars/t...

They're both 4L engines and both quote the same stats after that ie 0-62 in 4.2 seconds, Top Speed 180 etc etc etc Indeed, in all respects they seem almost identical.

Those 2 cars are not they only ones, I've noticed other adverts with the same disparity.

[Dischordant]

Ones at engine ones at wheels?

[tvrboy55]

yes indeed, i'm intrigue. Please explain as to what you mean by engin and wheels.

[natben]

The engine is capable of producing 380bhp but by the time the power travels through the gearbox, propshaft ,and rear differential some power is lost resulting in 320 bhp at the rear wheels.

[tvrboy55]

well that explains it, good answer.