The Comparative Analysis :
ALPINA Roadster S (03 - 05) vs. BMW Z4 Roadster sDrive20i Automatic (13 - 16)
€ 55,000

€ 39,600

€ 55,000
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 39,600
ⓘ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 14.8 cm shorter, 0.9 cm narrower and 0.4 cm taller than the BMW Z4 Roadster sDrive20i.
ALPINA Roadster S
BMW Z4 Roadster sDrive20i
1295
1781
1981
1291
1790
1951
1781 mm
Width
1790 mm
1981 mm
Width Incl. Mirrors
1951 mm
1295 mm
Height
1291 mm
2495
4091
2496
4239
4091 mm
Length
4239 mm
2495 mm
Wheelbase
2496 mm
Vehicle Weight
ALPINA Roadster S
BMW Z4 Roadster sDrive20i
1320 kg
Kerb Weight
1495 kg
1620 kg
Gross Vehicle
Weight
Weight
1750 kg

Weight Difference:
175 kg
11.71 %

General
ALPINA Roadster S
BMW Z4 Roadster sDrive20i
E85
Generation
E89
Roadster
Car Body Style
Roadster
Super Unleaded (98 RON)
Fuel Type
Super Unleaded (98 RON)

Rear-wheel drive
Drive
Rear-wheel drive

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

4
Valves
4
6
Cylinders
4
3346 CC
Engine Capacity
1997 CC
296 bhp
at 6300 rpm
Power
181 bhp
at 5000 rpm
ALPINA Roadster S
296 bhp
181 bhp
BMW Z4 Roadster sDrive20i
362 NM
at 4800 rpm
Max. Torque
270 NM
at 1250 rpm
ALPINA Roadster S
362 NM
270 NM
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
74 m
0.000 sec

ALPINA Roadster S
62 mph
62
mph
mph
100 m
0.000 sec

BMW Z4 Roadster sDrive20i
▶ REPLAY
4.46 kg/bhp
Weight-to-Power Ratio
8.26 kg/bhp
ALPINA Roadster S
4.46 kg/bhp
8.26 kg/bhp
BMW Z4 Roadster sDrive20i
Fuel Economy / Emissions
ALPINA Roadster S
BMW Z4 Roadster sDrive20i
Fuel Economy
29 mpg
combined
42 mpg
ALPINA Roadster S
29 mpg
42 mpg
BMW Z4 Roadster sDrive20i
19 mpg
city
30 mpg
No data
motorway
No data
55 L
Fuel Tank Capacity
55 L
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 6b (NEFZ)
238 g/km (NEFZ)
CO2 Emissions
159 g/km (NEFZ)
Practical Convenience
ALPINA Roadster S
BMW Z4 Roadster sDrive20i
2
Doors
2
2
No. of Seats
2
300 kg
Maximum Payload
255 kg
260 L
Boot Capacity
310 L






No data
Boot Capacity (Seats Down)
No data