The yearly death toll is put at around 850, but consider all the other numbers, too:
More than half of the 11,000-kilometer German Autobahn system has no speed limit. It is perfectly legal there, for example, to pass a police car at 210kmh. In fact, according to Mark Rask, author of American Autobahn, the average speed for cars is 130kmh; at any given moment, 15% are traveling 155kmh or faster. Surprisingly, the Autobahn is safer than U.S. highways. In 2001, the death rate there was 27% lower (0.59 deaths per 100 million vehicle miles traveled versus 0.81 for the U.S Interstates).
Why? Drivers in Germany must be at least 18 years old and fork over more than $1,000 to undergo 24 hours of rigorous private instruction, including training on the Autobahn, and pass a comprehensive written test, before obtaining a license. (Compare the U.S. with no required training and a minimum age of 16 in many states.) Also, unlike in the U.S., Germans use the left lane only for passing. Roads over there are built better, too (a 70-centimeter roadbed versus 28 centimeters in the U.S.)--and are better maintained. So are German cars made by BMW and Mercedes, which handle easier at high speed and sustain less collision damage.
The total number of individuals killed in an accident on a German autobahn is estimated to be anywhere between 500 to 700. In 2006 alone, there were a reported 645 deaths and it is believed this number has gotten worse since. You can find more from this link http://www.americanautobahn.com/.