The Comparative Analysis :

BMW Z4 Roadster sDrive20i Automatic (13 - 16) vs. Alfa Romeo Spider 2.4 JTDM 20V Q-Tronic (08 - 10)

€ 39,600
BMW Z4 Roadster sDrive20i Automatic (13 - 16) BMW Z4 Roadster sDrive20i
€ 40,500
 Alfa Romeo Spider 2.4 JTDM 20V Q-Tronic (08 - 10) Alfa Romeo Spider 2.4 JTDM 20V
€ 39,600
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 40,500

ⓘ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 6.1 inches shorter, 1.6 inches narrower and 1.1 inches lower than the Alfa Romeo Spider 2.4 JTDM 20V.
BMW Z4 Roadster sDrive20i
Alfa Romeo Spider 2.4 JTDM 20V
50.8
Blueprint BMW Z4 Roadster sDrive20i Automatic (13 - 16)
70.5
76.8
51.9
Blueprint Alfa Romeo Spider 2.4 JTDM 20V Q-Tronic (08 - 10)
72
80.1
70.5 in
Width
72 in
76.8 in
Width Incl. Mirrors
80.1 in
50.8 in
Height
51.9 in
Blueprint BMW Z4 Roadster sDrive20i Automatic (13 - 16)
98.3
166.9
Blueprint Alfa Romeo Spider 2.4 JTDM 20V Q-Tronic (08 - 10)
99.5
173
166.9 in
Length
173 in
98.3 in
Wheelbase
99.5 in

Vehicle Weight

BMW Z4 Roadster sDrive20i
Alfa Romeo Spider 2.4 JTDM 20V
3296 lb
Curb Weight
3814 lb
3858 lb
Gross Vehicle
Weight
4420 lb
BMW Z4 Roadster sDrive20i Automatic (13 - 16)
Weight Difference:
518 lb
13.58 %
Alfa Romeo Spider 2.4 JTDM 20V Q-Tronic (08 - 10)

General

BMW Z4 Roadster sDrive20i
Alfa Romeo Spider 2.4 JTDM 20V
E89
Generation
Typ 939
Roadster
Car Body Style
Roadster
Premium Unleaded
Fuel Type
Diesel
Rear-wheel drive
Drivetrain
Front-wheel drive
8-speed automatic transmission
Transmission
6-speed automatic transmission

Engine

BMW Z4 Roadster sDrive20i
Alfa Romeo Spider 2.4 JTDM 20V
Straight-four gasoline engine with tur­bo­charger
Engine Type
Straight-five diesel engine with tur­bo­charger
BMW N20
Engine Series
N20-B20
Engine Code
939 A3.000
4
Valves
4
4
Cylinders
5
2 L / 98 cu in
Displacement
2.4 L / 117 cu in
181 hp
at 5000 rpm
Power
197 hp
at 4000 rpm
BMW Z4 Roadster sDrive20i
181 hp
197 hp
Alfa Romeo Spider 2.4 JTDM 20V
199 lb‑ft
at 1250 rpm
Max. Torque
295 lb‑ft
at 2000 rpm
BMW Z4 Roadster sDrive20i
199 lb‑ft
295 lb‑ft
Alfa Romeo Spider 2.4 JTDM 20V

Performance

BMW Z4 Roadster sDrive20i
Alfa Romeo Spider 2.4 JTDM 20V
144 mph
Maximum Speed
140 mph
7.2 sec
Acceleration 0 to 62 mph
8.5 sec
62 mph 62
mph

328 ft
0.000 sec

BMW Z4 Roadster sDrive20i

62 mph 62
mph

387 ft
0.000 sec

Alfa Romeo Spider 2.4 JTDM 20V

▶ REPLAY
18.21 lb/hp
Weight-to-Power Ratio
19.36 lb/hp
BMW Z4 Roadster sDrive20i
18.21 lb/hp
19.36 lb/hp
Alfa Romeo Spider 2.4 JTDM 20V

Fuel Economy / Emissions

BMW Z4 Roadster sDrive20i
Alfa Romeo Spider 2.4 JTDM 20V
Fuel Economy
35 mpg
combined
30 mpg
BMW Z4 Roadster sDrive20i
35 mpg
30 mpg
Alfa Romeo Spider 2.4 JTDM 20V
25 mpg
city
21 mpg
No data
highway
No data
Kraftstoffanzeige
14.5 gal
Fuel Tank Capacity
18.5 gal
Kraftstoffanzeige
503 mi
Range
551 mi
BMW Z4 Roadster sDrive20i
503 mi
551 mi
Alfa Romeo Spider 2.4 JTDM 20V
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).
162.5 kWh
BMW Z4 Roadster sDrive20i
128.7 kWh
162.5 kWh
Alfa Romeo Spider 2.4 JTDM 20V
Euro 6b (NEFZ)
Emission Standard
Euro 4
256 g/mi (NEFZ)
CO2 Emissions
335 g/mi (NEFZ)

Practical Convenience

BMW Z4 Roadster sDrive20i
Alfa Romeo Spider 2.4 JTDM 20V
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