Sorry, that a terrible question. There are so many types of lamborginis and bugattis that your question doesnt even make sense. If your asking which is faster, the new Lamborghini Aventador or a bugatti veyron SS, then its obviously the Veyron SS
Bugatti is faster
bugatti
Bugatti
a bugatti
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Bugatti veyron
Bugatti
The faster car is the Bugatti which the Bugatti Vyeron Super Sport has a top speed of 268mph, much faster than any Lamborghini.
The Dragster is faster in a straight line. But the Bugatti is faster in a lap race
If you are asking about the Bugatti Veyron, then it is faster than the Lamborghini.
No way Bugatti is way faster then a viper
Bugatti Veyron.