Aston Martin DB11 Owner's Handbook Manual page 250

Transmission
Touchtronic IV Automatic Transmission
Rear mounted ZF 8HP70 eight-speed automatic gearbox with
'Shift by Wire' gear shift and Stop/Start ignition support.
Front mounted transmission radiator with transmission mounted
heat exchanger and pump.
Drive line
Cast aluminium torque tube with carbon fibre drive shaft.
Final Drive
Limited-slip differential with integrated coolant jacket.
12.48
Maintenance and Technical Data
Gear Ratios
1st 4.714
2nd 3.143
3rd 2.106
4th 1.667
5th 1.285
6th 1.000
7th 0.839
8th 0.667
Reverse 3.317
Final 2.703