The Comparative Analysis :
BMW Z4 Roadster sDrive35is M DKG (13 - 16) vs. Alfa Romeo Spider 3.2 JTS V6 24V Q4 Q-Tronic (06 - 10)
€ 57,600

€ 45,700

€ 57,600
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 BMW Z4 Roadster sDrive35is is considerably smaller in every dimension. It's 5.9 inches shorter, 1.6 inches narrower and 1.3 inches lower than the Alfa Romeo Spider 3.2 JTS V6 24V.
BMW Z4 Roadster sDrive35is
Alfa Romeo Spider 3.2 JTS V6 24V
50.6
70.5
76.8
51.9
72
80.1
70.5 in
Width
72 in
76.8 in
Width Incl. Mirrors
80.1 in
50.6 in
Height
51.9 in
98.3
167.1
99.5
173
167.1 in
Length
173 in
98.3 in
Wheelbase
99.5 in
Vehicle Weight
BMW Z4 Roadster sDrive35is
Alfa Romeo Spider 3.2 JTS V6 24V
3527 lb
Curb Weight
3880 lb
4090 lb
Gross Vehicle
Weight
Weight
4486 lb

Weight Difference:
353 lb
9.1 %

General
BMW Z4 Roadster sDrive35is
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)

7-speed dual clutch transmission
Transmission
6-speed automatic transmission
Engine
BMW Z4 Roadster sDrive35is
Alfa Romeo Spider 3.2 JTS V6 24V
Straight-six gasoline engine with two turbochargers (biturbo)
Engine Type
V6 gasoline engine (naturally aspirated engine)
BMW N54
Engine Series
N54-B30
Engine Code
939 A.000

4
Valves
4
6
Cylinders
6
3 L / 147 cu in
Displacement
3.2 L / 157 cu in
335 hp
at 5900 rpm
Power
256 hp
at 6300 rpm
BMW Z4 Roadster sDrive35is
335 hp
256 hp
Alfa Romeo Spider 3.2 JTS V6 24V
332 lb‑ft
at 1500 rpm
Max. Torque
237 lb‑ft
at 4500 rpm
BMW Z4 Roadster sDrive35is
332 lb‑ft
237 lb‑ft
Alfa Romeo Spider 3.2 JTS V6 24V
Performance
BMW Z4 Roadster sDrive35is
Alfa Romeo Spider 3.2 JTS V6 24V
155 mph
Maximum Speed
152 mph
4.8 sec
Acceleration 0 to 62 mph
7.2 sec
62 mph
62
mph
mph
220 ft
0.000 sec

BMW Z4 Roadster sDrive35is
62 mph
62
mph
mph
328 ft
0.000 sec

Alfa Romeo Spider 3.2 JTS V6 24V
▶ REPLAY
10.53 lb/hp
Weight-to-Power Ratio
15.16 lb/hp
BMW Z4 Roadster sDrive35is
10.53 lb/hp
15.16 lb/hp
Alfa Romeo Spider 3.2 JTS V6 24V
Fuel Economy / Emissions
BMW Z4 Roadster sDrive35is
Alfa Romeo Spider 3.2 JTS V6 24V
Fuel Economy
26 mpg
combined
19 mpg
BMW Z4 Roadster sDrive35is
26 mpg
19 mpg
Alfa Romeo Spider 3.2 JTS V6 24V
19 mpg
city
13 mpg
No data
highway
No data
14.5 gal
Fuel Tank Capacity
18.5 gal
380 mi
Range
357 mi
BMW Z4 Roadster sDrive35is
380 mi
357 mi
Alfa Romeo Spider 3.2 JTS V6 24V
Environmental Impact
170.4 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 sDrive35is
170.4 kWh
231.1 kWh
Alfa Romeo Spider 3.2 JTS V6 24V
Euro 5
Emission Standard
Euro 4
338 g/mi (NEFZ)
CO2 Emissions
463 g/mi (NEFZ)
Practical Convenience
BMW Z4 Roadster sDrive35is
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