The Comparative Analysis :
BMW Z4 Roadster M40i Steptronic Sport (19 - ..) vs. Alfa Romeo Spider 3.2 JTS V6 24V Q4 Q-Tronic (06 - 10)
€ 61,000

€ 45,700

€ 61,000
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 45,700
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The dimensions of these vehicles differ slightly. The BMW Z4 Roadster M40i is 6.9 cm shorter, 3.4 cm wider and 1.4 cm lower than the Alfa Romeo Spider 3.2 JTS V6 24V.
BMW Z4 Roadster M40i
Alfa Romeo Spider 3.2 JTS V6 24V
1304
1864
2024
1318
1830
2035
1864 mm
Width
1830 mm
2024 mm
Width Incl. Mirrors
2035 mm
1304 mm
Height
1318 mm
2470
4324
2528
4393
4324 mm
Length
4393 mm
2470 mm
Wheelbase
2528 mm
Vehicle Weight
BMW Z4 Roadster M40i
Alfa Romeo Spider 3.2 JTS V6 24V
1610 kg
Kerb Weight
1760 kg
1860 kg
Gross Vehicle
Weight
Weight
2035 kg

Weight Difference:
150 kg
8.52 %

General
BMW Z4 Roadster M40i
Alfa Romeo Spider 3.2 JTS V6 24V
G29
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

8-speed automatic transmission
Transmission
6-speed automatic transmission
Engine
BMW Z4 Roadster M40i
Alfa Romeo Spider 3.2 JTS V6 24V
Straight-six petrol engine with two turbochargers (biturbo)
Engine Type
V6 petrol engine (naturally aspirated engine)
BMW B58
Engine Series
B58-B30
Engine Code
939 A.000

4
Valves
4
6
Cylinders
6
2998 CC
Engine Capacity
3195 CC
335 bhp
at 5000 rpm
Power
256 bhp
at 6300 rpm
BMW Z4 Roadster M40i
335 bhp
256 bhp
Alfa Romeo Spider 3.2 JTS V6 24V
500 NM
at 1600 rpm
Max. Torque
322 NM
at 4500 rpm
BMW Z4 Roadster M40i
500 NM
322 NM
Alfa Romeo Spider 3.2 JTS V6 24V
Performance
BMW Z4 Roadster M40i
Alfa Romeo Spider 3.2 JTS V6 24V
155 mph
Maximum Speed
152 mph
4.5 sec
Acceleration 0 to 62 mph
7.2 sec
62 mph
62
mph
mph
63 m
0.000 sec

BMW Z4 Roadster M40i
62 mph
62
mph
mph
100 m
0.000 sec

Alfa Romeo Spider 3.2 JTS V6 24V
▶ REPLAY
4.81 kg/bhp
Weight-to-Power Ratio
6.88 kg/bhp
BMW Z4 Roadster M40i
4.81 kg/bhp
6.88 kg/bhp
Alfa Romeo Spider 3.2 JTS V6 24V
Fuel Economy / Emissions
BMW Z4 Roadster M40i
Alfa Romeo Spider 3.2 JTS V6 24V
Fuel Economy
40 mpg
combined
23 mpg
BMW Z4 Roadster M40i
40 mpg
23 mpg
Alfa Romeo Spider 3.2 JTS V6 24V
31 mpg
city
15 mpg
No data
motorway
No data
52 L
Fuel Tank Capacity
70 L
455 mi
Range
357 mi
BMW Z4 Roadster M40i
455 mi
357 mi
Alfa Romeo Spider 3.2 JTS V6 24V
Environmental Impact
134.5 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).
231.1 kWh
BMW Z4 Roadster M40i
134.5 kWh
231.1 kWh
Alfa Romeo Spider 3.2 JTS V6 24V
Euro 6d-TEMP-EVAP-ISC (WLTP)
Emission Standard
Euro 4
191 g/km (WLTP)
CO2 Emissions
288 g/km (NEFZ)
Practical Convenience
BMW Z4 Roadster M40i
Alfa Romeo Spider 3.2 JTS V6 24V
2
Doors
2
2
No. of Seats
2
250 kg
Maximum Payload
275 kg
281 L
Boot Capacity
253 L






No data
Boot Capacity (Seats Down)
No data