Its forceful 503-horsepower, twin-turbo V8 engine delivers that punch ... It also has an optional 503-hp V8 engine that makes for lighter and sharper performance. Aston Martin’s DB9 GT has a 5.9-liter ...
The Aston Martin DB9 is one of the finest examples of a British ... Though the DB11 also received a turbo at the same time, it was a Mercedes twin-turbo V8. The V12 has a wide peak torque plateau ...