The Comparative Analysis :
BMW Z4 Roadster sDrive20i (11 - 13) vs. BMW Z4 Roadster sDrive23i Sport-Automatic (09 - 11)
€ 36,600
€ 38,800
€ 36,600
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 38,800
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The dimensions of the Z4 Roadster sDrive20i and the Z4 Roadster sDrive23i are absolutely identical. Both are 166.9 inches long, 70.5 inches wide and 50.8 inches tall.
Z4 Roadster sDrive20i
Z4 Roadster sDrive23i
50.8
70.5
76.8
50.8
70.5
76.8
70.5 in
Width
70.5 in
76.8 in
Width Incl. Mirrors
76.8 in
50.8 in
Height
50.8 in
98.3
166.9
98.3
166.9
166.9 in
Length
166.9 in
98.3 in
Wheelbase
98.3 in
Vehicle Weight
Z4 Roadster sDrive20i
Z4 Roadster sDrive23i
3241 lb
Curb Weight
3318 lb
3803 lb
Gross Vehicle
Weight
Weight
3880 lb
Weight Difference:
77 lb
2.32 %
General
Z4 Roadster sDrive20i
Z4 Roadster sDrive23i
E89
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
6-speed automatic transmission
Engine
Z4 Roadster sDrive20i
Z4 Roadster sDrive23i
Straight-four gasoline engine with turbocharger
Engine Type
Straight-six gasoline engine (naturally aspirated engine)
BMW N20
Engine Series
BMW N52
N20-B20
Engine Code
N52-B25
4
Valves
4
4
Cylinders
6
2 L / 98 cu in
Displacement
2.5 L / 122 cu in
181 hp
at 5000 rpm
Power
201 hp
at 6300 rpm
Z4 Roadster sDrive20i
181 hp
201 hp
Z4 Roadster sDrive23i
199 lb‑ft
at 1250 rpm
Max. Torque
184 lb‑ft
at 2750 rpm
Z4 Roadster sDrive20i
199 lb‑ft
184 lb‑ft
Z4 Roadster sDrive23i
Performance
Z4 Roadster sDrive20i
Z4 Roadster sDrive23i
146 mph
Maximum Speed
149 mph
6.9 sec
Acceleration 0 to 62 mph
7.3 sec
62 mph
62
mph
mph
315 ft
0.000 sec
Z4 Roadster sDrive20i
62 mph
62
mph
mph
331 ft
0.000 sec
Z4 Roadster sDrive23i
▶ REPLAY
17.91 lb/hp
Weight-to-Power Ratio
16.51 lb/hp
Z4 Roadster sDrive20i
17.91 lb/hp
16.51 lb/hp
Z4 Roadster sDrive23i
Fuel Economy / Emissions
Z4 Roadster sDrive20i
Z4 Roadster sDrive23i
Fuel Economy
35 mpg
combined
29 mpg
Z4 Roadster sDrive20i
35 mpg
29 mpg
Z4 Roadster sDrive23i
26 mpg
city
20 mpg
No data
highway
No data
14.5 gal
Fuel Tank Capacity
14.5 gal
503 mi
Range
417 mi
Z4 Roadster sDrive20i
503 mi
417 mi
Z4 Roadster sDrive23i
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).
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).
155.3 kWh
Z4 Roadster sDrive20i
128.7 kWh
155.3 kWh
Z4 Roadster sDrive23i
Euro 5
Emission Standard
Euro 5
256 g/mi (NEFZ)
CO2 Emissions
309 g/mi (NEFZ)
Practical Convenience
Z4 Roadster sDrive20i
Z4 Roadster sDrive23i
2
Doors
2
2
No. of Seats
2
562 lb
Maximum Payload
562 lb
8.8 cu ft
Trunk Volume
8.8 cu ft
No data
Cargo Volume (Seats Down)
No data
