The Comparative Analysis :
BMW Z4 Roadster sDrive20i Automatic (13 - 16) vs. Alfa Romeo Spider 3.2 JTS V6 24V (08 - 10)
€ 39,600

€ 41,300

€ 39,600
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 41,300
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The BMW Z4 Roadster sDrive20i 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 sDrive20i
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 sDrive20i
Alfa Romeo Spider 3.2 JTS V6 24V
1495 kg
Kerb Weight
1675 kg
1750 kg
Gross Vehicle
Weight
Weight
1950 kg

Weight Difference:
180 kg
10.75 %

General
BMW Z4 Roadster sDrive20i
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
Front-wheel drive

8-speed automatic transmission
Transmission
6-speed manual transmission
Engine
BMW Z4 Roadster sDrive20i
Alfa Romeo Spider 3.2 JTS V6 24V
Straight-four petrol engine with turbocharger
Engine Type
V6 petrol engine (naturally aspirated engine)
BMW N20
Engine Series
N20-B20
Engine Code
939 A.000

4
Valves
4
4
Cylinders
6
1997 CC
Engine Capacity
3195 CC
181 bhp
at 5000 rpm
Power
256 bhp
at 6300 rpm
BMW Z4 Roadster sDrive20i
181 bhp
256 bhp
Alfa Romeo Spider 3.2 JTS V6 24V
270 NM
at 1250 rpm
Max. Torque
322 NM
at 4500 rpm
BMW Z4 Roadster sDrive20i
270 NM
322 NM
Alfa Romeo Spider 3.2 JTS V6 24V
Performance
BMW Z4 Roadster sDrive20i
Alfa Romeo Spider 3.2 JTS V6 24V
144 mph
Maximum Speed
155 mph
7.2 sec
Acceleration 0 to 62 mph
7.2 sec
62 mph
62
mph
mph
100 m
0.000 sec

BMW Z4 Roadster sDrive20i
62 mph
62
mph
mph
100 m
0.000 sec

Alfa Romeo Spider 3.2 JTS V6 24V
▶ REPLAY
8.26 kg/bhp
Weight-to-Power Ratio
6.54 kg/bhp
BMW Z4 Roadster sDrive20i
8.26 kg/bhp
6.54 kg/bhp
Alfa Romeo Spider 3.2 JTS V6 24V
Fuel Economy / Emissions
BMW Z4 Roadster sDrive20i
Alfa Romeo Spider 3.2 JTS V6 24V
Fuel Economy
42 mpg
combined
25 mpg
BMW Z4 Roadster sDrive20i
42 mpg
25 mpg
Alfa Romeo Spider 3.2 JTS V6 24V
30 mpg
city
17 mpg
No data
motorway
No data
55 L
Fuel Tank Capacity
70 L
503 mi
Range
392 mi
BMW Z4 Roadster sDrive20i
503 mi
392 mi
Alfa Romeo Spider 3.2 JTS V6 24V
Environmental Impact
128.7 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).
210.3 kWh
BMW Z4 Roadster sDrive20i
128.7 kWh
210.3 kWh
Alfa Romeo Spider 3.2 JTS V6 24V
Euro 6b (NEFZ)
Emission Standard
Euro 4
159 g/km (NEFZ)
CO2 Emissions
262 g/km (NEFZ)
Practical Convenience
BMW Z4 Roadster sDrive20i
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