The Comparative Analysis :
ALPINA Roadster S (03 - 05) vs. BMW Z4 Roadster sDrive20i Sport-Automatic (11 - 13)
€ 55,000

€ 39,000

€ 55,000
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 39,000
ⓘ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 ALPINA Roadster S is 5.8 inches shorter, 0.4 inches narrower and 0.2 inches taller than the BMW Z4 Roadster sDrive20i.
ALPINA Roadster S
BMW Z4 Roadster sDrive20i
51
70.1
78
50.8
70.5
76.8
70.1 in
Width
70.5 in
78 in
Width Incl. Mirrors
76.8 in
51 in
Height
50.8 in
98.2
161.1
98.3
166.9
161.1 in
Length
166.9 in
98.2 in
Wheelbase
98.3 in
Vehicle Weight
ALPINA Roadster S
BMW Z4 Roadster sDrive20i
2910 lb
Curb Weight
3296 lb
3571 lb
Gross Vehicle
Weight
Weight
3858 lb

Weight Difference:
386 lb
11.71 %

General
ALPINA Roadster S
BMW Z4 Roadster sDrive20i
E85
Generation
E89
Roadster
Car Body Style
Roadster
Premium Unleaded
Fuel Type
Premium Unleaded

Rear-wheel drive
Drivetrain
Rear-wheel drive

6-speed manual transmission
Transmission
8-speed automatic transmission
Engine
ALPINA Roadster S
BMW Z4 Roadster sDrive20i
Straight-six gasoline engine (naturally aspirated engine)
Engine Type
Straight-four gasoline engine with turbocharger
Engine Series
BMW N20
E5/1
Engine Code
N20-B20

4
Valves
4
6
Cylinders
4
3.3 L / 161 cu in
Displacement
2 L / 98 cu in
296 hp
at 6300 rpm
Power
181 hp
at 5000 rpm
ALPINA Roadster S
296 hp
181 hp
BMW Z4 Roadster sDrive20i
267 lb‑ft
at 4800 rpm
Max. Torque
199 lb‑ft
at 1250 rpm
ALPINA Roadster S
267 lb‑ft
199 lb‑ft
BMW Z4 Roadster sDrive20i
Performance
ALPINA Roadster S
BMW Z4 Roadster sDrive20i
165 mph
Maximum Speed
144 mph
5.3 sec
Acceleration 0 to 62 mph
7.2 sec
62 mph
62
mph
mph
243 ft
0.000 sec

ALPINA Roadster S
62 mph
62
mph
mph
328 ft
0.000 sec

BMW Z4 Roadster sDrive20i
▶ REPLAY
9.83 lb/hp
Weight-to-Power Ratio
18.21 lb/hp
ALPINA Roadster S
9.83 lb/hp
18.21 lb/hp
BMW Z4 Roadster sDrive20i
Fuel Economy / Emissions
ALPINA Roadster S
BMW Z4 Roadster sDrive20i
Fuel Economy
24 mpg
combined
35 mpg
ALPINA Roadster S
24 mpg
35 mpg
BMW Z4 Roadster sDrive20i
15 mpg
city
26 mpg
No data
highway
No data
14.5 gal
Fuel Tank Capacity
14.5 gal
345 mi
Range
503 mi
ALPINA Roadster S
345 mi
503 mi
BMW Z4 Roadster sDrive20i
Environmental Impact
187.5 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).
128.7 kWh
ALPINA Roadster S
187.5 kWh
128.7 kWh
BMW Z4 Roadster sDrive20i
Euro 4
Emission Standard
Euro 5
383 g/mi (NEFZ)
CO2 Emissions
256 g/mi (NEFZ)
Practical Convenience
ALPINA Roadster S
BMW Z4 Roadster sDrive20i
2
Doors
2
2
No. of Seats
2
661 lb
Maximum Payload
562 lb
7.4 cu ft
Trunk Volume
8.8 cu ft






No data
Cargo Volume (Seats Down)
No data