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 15.4 cm shorter, 4 cm narrower and 2.7 cm lower than the Alfa Romeo Spider 3.2 JTS V6 24V.
BMW Z4 Roadster sDrive23i
Alfa Romeo Spider 3.2 JTS V6 24V
1291
1790
1951
1318
1830
2035
1790 mm
Width
1830 mm
1951 mm
Width Incl. Mirrors
2035 mm
1291 mm
Height
1318 mm
2496
4239
2528
4393
4239 mm
Length
4393 mm
2496 mm
Wheelbase
2528 mm
Vehicle Weight
BMW Z4 Roadster sDrive23i
Alfa Romeo Spider 3.2 JTS V6 24V
1505 kg
Kerb Weight
1740 kg
1760 kg
Gross Vehicle
Weight
Weight
2015 kg

Weight Difference:
235 kg
13.51 %

General
BMW Z4 Roadster sDrive23i
Alfa Romeo Spider 3.2 JTS V6 24V
E89
Generation
Typ 939
Roadster
Car Body Style
Roadster
Super Unleaded (98 RON)
Fuel Type
Unleaded (95 RON)

Rear-wheel drive
Drive
Permanent all-wheel drive

6-speed automatic transmission
Transmission
6-speed manual transmission
Engine
BMW Z4 Roadster sDrive23i
Alfa Romeo Spider 3.2 JTS V6 24V
Straight-six petrol engine (naturally aspirated engine)
Engine Type
V6 petrol engine (naturally aspirated engine)
BMW N52
Engine Series
N52-B25
Engine Code
939 A.000

4
Valves
4
6
Cylinders
6
2497 CC
Engine Capacity
3195 CC
201 bhp
at 6300 rpm
Power
256 bhp
at 6300 rpm
BMW Z4 Roadster sDrive23i
201 bhp
256 bhp
Alfa Romeo Spider 3.2 JTS V6 24V
250 NM
at 2750 rpm
Max. Torque
322 NM
at 4500 rpm
BMW Z4 Roadster sDrive23i
250 NM
322 NM
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
101 m
0.000 sec

BMW Z4 Roadster sDrive23i
62 mph
62
mph
mph
97 m
0.000 sec

Alfa Romeo Spider 3.2 JTS V6 24V
▶ REPLAY
7.49 kg/bhp
Weight-to-Power Ratio
6.8 kg/bhp
BMW Z4 Roadster sDrive23i
7.49 kg/bhp
6.8 kg/bhp
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
34 mpg
combined
25 mpg
BMW Z4 Roadster sDrive23i
34 mpg
25 mpg
Alfa Romeo Spider 3.2 JTS V6 24V
24 mpg
city
17 mpg
No data
motorway
No data
55 L
Fuel Tank Capacity
70 L
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
192 g/km (NEFZ)
CO2 Emissions
272 g/km (NEFZ)
Practical Convenience
BMW Z4 Roadster sDrive23i
Alfa Romeo Spider 3.2 JTS V6 24V
2
Doors
2
2
No. of Seats
2
255 kg
Maximum Payload
275 kg
310 L
Boot Capacity
253 L






No data
Boot Capacity (Seats Down)
No data