The Comparative Analysis :
BMW 640d Convertible xDrive Steptronic (12 - 14) vs. Aston Martin DB9 Volante Touchtronic (06 - 08)
€ 90,800

€ 177,400

€ 90,800
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 177,400
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The BMW 640d Cabrio is considerably bigger in every dimension. It's 7.2 inches longer, 0.7 inches wider and 3.7 inches taller than the Aston Martin DB9 Volante.
BMW 640d Cabrio
Aston Martin DB9 Volante
53.7
74.6
81.9
50
73.8
81.7
74.6 in
Width
73.8 in
81.9 in
Width Incl. Mirrors
81.7 in
53.7 in
Height
50 in
112.4
192.7
107.9
185.4
192.7 in
Length
185.4 in
112.4 in
Wheelbase
107.9 in
Vehicle Weight
BMW 640d Cabrio
Aston Martin DB9 Volante
4420 lb
Curb Weight
3968 lb
5379 lb
Gross Vehicle
Weight
Weight
4751 lb

Weight Difference:
452 lb
10.23 %

General
BMW 640d Cabrio
Aston Martin DB9 Volante
F12
Generation
VH1
Convertible
Car Body Style
Convertible
Diesel
Fuel Type
Premium Unleaded

Permanent all-wheel drive (AWD)
Drivetrain
Rear-wheel drive

8-speed automatic transmission
Transmission
6-speed automatic transmission
Engine
BMW 640d Cabrio
Aston Martin DB9 Volante
Straight-six diesel engine with two turbochargers (biturbo)
Engine Type
V12 gasoline engine (naturally aspirated engine)
BMW N57
Engine Series
N57-D30
Engine Code
AM04

4
Valves
4
6
Cylinders
12
3 L / 147 cu in
Displacement
5.9 L / 289 cu in
309 hp
at 4400 rpm
Power
450 hp
at 6000 rpm
BMW 640d Cabrio
309 hp
450 hp
Aston Martin DB9 Volante
465 lb‑ft
at 1500 rpm
Max. Torque
420 lb‑ft
at 5000 rpm
BMW 640d Cabrio
465 lb‑ft
420 lb‑ft
Aston Martin DB9 Volante
Performance
BMW 640d Cabrio
Aston Martin DB9 Volante
155 mph
Maximum Speed
165 mph
5.4 sec
Acceleration 0 to 62 mph
5.1 sec
62 mph
62
mph
mph
246 ft
0.000 sec

BMW 640d Cabrio
62 mph
62
mph
mph
233 ft
0.000 sec

Aston Martin DB9 Volante
▶ REPLAY
14.3 lb/hp
Weight-to-Power Ratio
8.82 lb/hp
BMW 640d Cabrio
14.3 lb/hp
8.82 lb/hp
Aston Martin DB9 Volante
Fuel Economy / Emissions
BMW 640d Cabrio
Aston Martin DB9 Volante
Fuel Economy
40 mpg
combined
14 mpg
BMW 640d Cabrio
40 mpg
14 mpg
Aston Martin DB9 Volante
33 mpg
city
9 mpg
No data
highway
No data
18.5 gal
Fuel Tank Capacity
21.1 gal
737 mi
Range
301 mi
BMW 640d Cabrio
737 mi
301 mi
Aston Martin DB9 Volante
Environmental Impact
121.3 kWh
Total Energy Consumption
per 100 miles ⓘThe total energy consumption per 100 miles is the amount of energy consumed by a vehicle when burning fuel or using electricity per 100 miles (final energy), and the energy required to produce the appropriate amount of fuel or electricity (primary energy).
per 100 miles ⓘThe total energy consumption per 100 miles is the amount of energy consumed by a vehicle when burning fuel or using electricity per 100 miles (final energy), and the energy required to produce the appropriate amount of fuel or electricity (primary energy).
312.5 kWh
BMW 640d Cabrio
121.3 kWh
312.5 kWh
Aston Martin DB9 Volante
Euro 5
Emission Standard
Euro 4
248 g/mi (NEFZ)
CO2 Emissions
634 g/mi (NEFZ)
Practical Convenience
BMW 640d Cabrio
Aston Martin DB9 Volante
2
Doors
2
4
No. of Seats
4
959 lb
Maximum Payload
783 lb
9.9 cu ft
Trunk Volume
No data




No data
Cargo Volume (Seats Down)
No data