The Comparative Analysis :
BMW Z4 Roadster sDrive20i Steptronic Sport (19 - ..) vs. Alfa Romeo Spider 3.2 JTS V6 24V Q4 Q-Tronic (06 - 10)
€ 43,300
€ 45,700
€ 43,300
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 sDrive20i is 2.7 inches shorter, 1.3 inches wider and 0.6 inches lower than the Alfa Romeo Spider 3.2 JTS V6 24V.
BMW Z4 Roadster sDrive20i
Alfa Romeo Spider 3.2 JTS V6 24V
51.3
73.4
79.7
51.9
72
80.1
73.4 in
Width
72 in
79.7 in
Width Incl. Mirrors
80.1 in
51.3 in
Height
51.9 in
97.2
170.2
99.5
173
170.2 in
Length
173 in
97.2 in
Wheelbase
99.5 in
Vehicle Weight
BMW Z4 Roadster sDrive20i
Alfa Romeo Spider 3.2 JTS V6 24V
3296 lb
Curb Weight
3880 lb
3836 lb
Gross Vehicle
Weight
Weight
4486 lb
Weight Difference:
584 lb
15.05 %
General
BMW Z4 Roadster sDrive20i
Alfa Romeo Spider 3.2 JTS V6 24V
G29
Generation
Typ 939
Roadster
Car Body Style
Roadster
Premium Unleaded
Fuel Type
Mid-Grade Unleaded
Rear-wheel drive
Drivetrain
Permanent all-wheel drive (AWD)
8-speed automatic transmission
Transmission
6-speed automatic transmission
Engine
BMW Z4 Roadster sDrive20i
Alfa Romeo Spider 3.2 JTS V6 24V
Straight-four gasoline engine with turbocharger
Engine Type
V6 gasoline engine (naturally aspirated engine)
BMW B48
Engine Series
B48-B20
Engine Code
939 A.000
4
Valves
4
4
Cylinders
6
2 L / 98 cu in
Displacement
3.2 L / 157 cu in
194 hp
at 4500 rpm
Power
256 hp
at 6300 rpm
BMW Z4 Roadster sDrive20i
194 hp
256 hp
Alfa Romeo Spider 3.2 JTS V6 24V
236 lb‑ft
at 1450 rpm
Max. Torque
237 lb‑ft
at 4500 rpm
BMW Z4 Roadster sDrive20i
236 lb‑ft
237 lb‑ft
Alfa Romeo Spider 3.2 JTS V6 24V
Performance
BMW Z4 Roadster sDrive20i
Alfa Romeo Spider 3.2 JTS V6 24V
149 mph
Maximum Speed
152 mph
6.6 sec
Acceleration 0 to 62 mph
7.2 sec
62 mph
62
mph
mph
302 ft
0.000 sec
BMW Z4 Roadster sDrive20i
62 mph
62
mph
mph
328 ft
0.000 sec
Alfa Romeo Spider 3.2 JTS V6 24V
▶ REPLAY
16.99 lb/hp
Weight-to-Power Ratio
15.16 lb/hp
BMW Z4 Roadster sDrive20i
16.99 lb/hp
15.16 lb/hp
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
39 mpg
combined
19 mpg
BMW Z4 Roadster sDrive20i
39 mpg
19 mpg
Alfa Romeo Spider 3.2 JTS V6 24V
32 mpg
city
13 mpg
No data
highway
No data
13.7 gal
Fuel Tank Capacity
18.5 gal
529 mi
Range
357 mi
BMW Z4 Roadster sDrive20i
529 mi
357 mi
Alfa Romeo Spider 3.2 JTS V6 24V
Environmental Impact
115.6 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 sDrive20i
115.6 kWh
231.1 kWh
Alfa Romeo Spider 3.2 JTS V6 24V
Euro 6d-TEMP-EVAP (WLTP)
Emission Standard
Euro 4
269 g/mi (WLTP)
CO2 Emissions
463 g/mi (NEFZ)
Practical Convenience
BMW Z4 Roadster sDrive20i
Alfa Romeo Spider 3.2 JTS V6 24V
2
Doors
2
2
No. of Seats
2
540 lb
Maximum Payload
606 lb
8 cu ft
Trunk Volume
7.2 cu ft
No data
Cargo Volume (Seats Down)
No data
