The Aston Martin DB9 Automatic Transmission – Aston 1936 Next I checked out the official Aston Martin Workshop Manual Section 7 on the Automatic Transmission. It reveals that the transmission is a ZF 6HP26 transmission. ZF makes transmissions for many manufacturers, and the transmission itself is NOT bespoke to Aston Martin. It’s used in BMWs and other brands. Used Aston Martin DB9 with Manual transmission for Sale Search Used Aston Martin DB9 with Manual transmission for Sale Nationwide. We analyze millions of used cars daily.