The Comparative Analysis :
BMW Z4 Roadster sDrive23i Sport-Automatic (09 - 11) vs. Alfa Romeo Spider 3.2 JTS V6 24V Q4 (06 - 10)
€ 38,800
€ 43,600
€ 38,800
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 43,600
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The BMW Z4 Roadster sDrive23i is considerably smaller in every dimension. It's 6.1 inches shorter, 1.6 inches narrower and 1.1 inches lower than the Alfa Romeo Spider 3.2 JTS V6 24V.
BMW Z4 Roadster sDrive23i
Alfa Romeo Spider 3.2 JTS V6 24V
50.8
70.5
76.8
51.9
72
80.1
70.5 in
Width
72 in
76.8 in
Width Incl. Mirrors
80.1 in
50.8 in
Height
51.9 in
98.3
166.9
99.5
173
166.9 in
Length
173 in
98.3 in
Wheelbase
99.5 in
Vehicle Weight
BMW Z4 Roadster sDrive23i
Alfa Romeo Spider 3.2 JTS V6 24V
3318 lb
Curb Weight
3836 lb
3880 lb
Gross Vehicle
Weight
Weight
4442 lb
Weight Difference:
518 lb
13.5 %
General
BMW Z4 Roadster sDrive23i
Alfa Romeo Spider 3.2 JTS V6 24V
E89
Generation
Typ 939
Roadster
Car Body Style
Roadster
Premium Unleaded
Fuel Type
Mid-Grade Unleaded
Rear-wheel drive
Drivetrain
Permanent all-wheel drive (AWD)
6-speed automatic transmission
Transmission
6-speed manual transmission
Engine
BMW Z4 Roadster sDrive23i
Alfa Romeo Spider 3.2 JTS V6 24V
Straight-six gasoline engine (naturally aspirated engine)
Engine Type
V6 gasoline engine (naturally aspirated engine)
BMW N52
Engine Series
N52-B25
Engine Code
939 A.000
4
Valves
4
6
Cylinders
6
2.5 L / 122 cu in
Displacement
3.2 L / 157 cu in
201 hp
at 6300 rpm
Power
256 hp
at 6300 rpm
BMW Z4 Roadster sDrive23i
201 hp
256 hp
Alfa Romeo Spider 3.2 JTS V6 24V
184 lb‑ft
at 2750 rpm
Max. Torque
237 lb‑ft
at 4500 rpm
BMW Z4 Roadster sDrive23i
184 lb‑ft
237 lb‑ft
Alfa Romeo Spider 3.2 JTS V6 24V
Performance
BMW Z4 Roadster sDrive23i
Alfa Romeo Spider 3.2 JTS V6 24V
149 mph
Maximum Speed
152 mph
7.3 sec
Acceleration 0 to 62 mph
7 sec
62 mph
62
mph
mph
331 ft
0.000 sec
BMW Z4 Roadster sDrive23i
62 mph
62
mph
mph
318 ft
0.000 sec
Alfa Romeo Spider 3.2 JTS V6 24V
▶ REPLAY
16.51 lb/hp
Weight-to-Power Ratio
14.98 lb/hp
BMW Z4 Roadster sDrive23i
16.51 lb/hp
14.98 lb/hp
Alfa Romeo Spider 3.2 JTS V6 24V
Fuel Economy / Emissions
BMW Z4 Roadster sDrive23i
Alfa Romeo Spider 3.2 JTS V6 24V
Fuel Economy
29 mpg
combined
20 mpg
BMW Z4 Roadster sDrive23i
29 mpg
20 mpg
Alfa Romeo Spider 3.2 JTS V6 24V
20 mpg
city
14 mpg
No data
highway
No data
14.5 gal
Fuel Tank Capacity
18.5 gal
417 mi
Range
378 mi
BMW Z4 Roadster sDrive23i
417 mi
378 mi
Alfa Romeo Spider 3.2 JTS V6 24V
Environmental Impact
155.3 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).
217.9 kWh
BMW Z4 Roadster sDrive23i
155.3 kWh
217.9 kWh
Alfa Romeo Spider 3.2 JTS V6 24V
Euro 5
Emission Standard
Euro 4
309 g/mi (NEFZ)
CO2 Emissions
438 g/mi (NEFZ)
Practical Convenience
BMW Z4 Roadster sDrive23i
Alfa Romeo Spider 3.2 JTS V6 24V
2
Doors
2
2
No. of Seats
2
562 lb
Maximum Payload
606 lb
8.8 cu ft
Trunk Volume
7.2 cu ft
No data
Cargo Volume (Seats Down)
No data
