The Comparative Analysis :

BMW Z4 Roadster sDrive30i Sport-Automatic (09 - 11) vs. Alfa Romeo Spider 2.4 JTDM 20V (08 - 10)

€ 45,800
BMW Z4 Roadster sDrive30i Sport-Automatic (09 - 11) BMW Z4 Roadster sDrive30i
€ 38,400
 Alfa Romeo Spider 2.4 JTDM 20V (08 - 10) Alfa Romeo Spider 2.4 JTDM 20V
€ 45,800
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 38,400

ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info

Vehicle Dimensions

The BMW Z4 Roadster sDrive30i 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 sDrive30i
Alfa Romeo Spider 2.4 JTDM 20V
50.8
Blueprint BMW Z4 Roadster sDrive30i Sport-Automatic (09 - 11)
70.5
76.8
51.9
Blueprint Alfa Romeo Spider 2.4 JTDM 20V (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 sDrive30i Sport-Automatic (09 - 11)
98.3
166.9
Blueprint Alfa Romeo Spider 2.4 JTDM 20V (08 - 10)
99.5
173
166.9 in
Length
173 in
98.3 in
Wheelbase
99.5 in

Vehicle Weight

BMW Z4 Roadster sDrive30i
Alfa Romeo Spider 2.4 JTDM 20V
3318 lb
Curb Weight
3770 lb
3880 lb
Gross Vehicle
Weight
4376 lb
BMW Z4 Roadster sDrive30i Sport-Automatic (09 - 11)
Weight Difference:
452 lb
11.99 %
Alfa Romeo Spider 2.4 JTDM 20V (08 - 10)

General

BMW Z4 Roadster sDrive30i
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
6-speed automatic transmission
Transmission
6-speed manual transmission

Engine

BMW Z4 Roadster sDrive30i
Alfa Romeo Spider 2.4 JTDM 20V
Straight-six gasoline engine (nat­u­ral­ly as­pi­rat­ed engine)
Engine Type
Straight-five diesel engine with tur­bo­charger
BMW N52
Engine Series
N52-B30
Engine Code
939 A3.000
4
Valves
4
6
Cylinders
5
3 L / 147 cu in
Displacement
2.4 L / 117 cu in
254 hp
at 6600 rpm
Power
206 hp
at 4000 rpm
BMW Z4 Roadster sDrive30i
254 hp
206 hp
Alfa Romeo Spider 2.4 JTDM 20V
229 lb‑ft
at 2600 rpm
Max. Torque
295 lb‑ft
at 1500 rpm
BMW Z4 Roadster sDrive30i
229 lb‑ft
295 lb‑ft
Alfa Romeo Spider 2.4 JTDM 20V

Performance

BMW Z4 Roadster sDrive30i
Alfa Romeo Spider 2.4 JTDM 20V
155 mph
Maximum Speed
144 mph
6.1 sec
Acceleration 0 to 62 mph
8.1 sec
62 mph 62
mph

279 ft
0.000 sec

BMW Z4 Roadster sDrive30i

62 mph 62
mph

371 ft
0.000 sec

Alfa Romeo Spider 2.4 JTDM 20V

▶ REPLAY
13.06 lb/hp
Weight-to-Power Ratio
18.3 lb/hp
BMW Z4 Roadster sDrive30i
13.06 lb/hp
18.3 lb/hp
Alfa Romeo Spider 2.4 JTDM 20V

Fuel Economy / Emissions

BMW Z4 Roadster sDrive30i
Alfa Romeo Spider 2.4 JTDM 20V
Fuel Economy
28 mpg
combined
35 mpg
BMW Z4 Roadster sDrive30i
28 mpg
35 mpg
Alfa Romeo Spider 2.4 JTDM 20V
20 mpg
city
26 mpg
No data
highway
No data
Kraftstoffanzeige
14.5 gal
Fuel Tank Capacity
18.5 gal
Kraftstoffanzeige
412 mi
Range
639 mi
BMW Z4 Roadster sDrive30i
412 mi
639 mi
Alfa Romeo Spider 2.4 JTDM 20V
Environmental Impact
157.2 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).
139.9 kWh
BMW Z4 Roadster sDrive30i
157.2 kWh
139.9 kWh
Alfa Romeo Spider 2.4 JTDM 20V
Euro 5
Emission Standard
Euro 4
314 g/mi (NEFZ)
CO2 Emissions
288 g/mi (NEFZ)

Practical Convenience

BMW Z4 Roadster sDrive30i
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