try this:
http://www.bmwusa.com/vehicles/futur...3coupe/default
and check out this paragraph from the page:
"Then there’s the power – 300 horses worth of twin-turbo power.
Just like any other BMW, the all-new 3 Series Coupe is outfitted to provide an exhilarating drive. Under the hood of the 335i Coupe is an
inline 6-cylinder engine with high precision injection and twin-turbo chargers, giving you 300 horses of heart-pounding power and class-leading 300 ft. lbs. of torque."
If that kid still thinks it's bogus coming from the official BMW USA site, then maybe you should just ask him to pop the hood when he gets his V8 335i.