The Comparative Analysis :
BMW Z4 Roadster sDrive28i Sport-Automatic (11 - 13) vs. BMW Z4 Roadster sDrive18i Automatic (13 - 16)
€ 46,000
Z4 Roadster sDrive28i € 36,600
Z4 Roadster sDrive18i
€ 46,000
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 36,600
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The dimensions of the Z4 Roadster sDrive28i and the Z4 Roadster sDrive18i are absolutely identical. Both are 166.9 inches long, 70.5 inches wide and 50.8 inches tall.
Z4 Roadster sDrive28i
Z4 Roadster sDrive18i
70.5 in
Width
70.5 in
76.8 in
Width Incl. Mirrors
76.8 in
50.8 in
Height
50.8 in
166.9 in
Length
166.9 in
98.3 in
Wheelbase
98.3 in
Vehicle Weight
Z4 Roadster sDrive28i
Z4 Roadster sDrive18i
3296 lb
Curb Weight
3296 lb
3858 lb
Gross Vehicle
Weight
Weight
3858 lb
Weight Difference:
0 lb
0 %
General
Z4 Roadster sDrive28i
Z4 Roadster sDrive18i
E89
Generation
E89
Roadster
Car Body Style
Roadster
Premium Unleaded
Fuel Type
Premium Unleaded
Rear-wheel drive
Drivetrain
Rear-wheel drive
8-speed automatic transmission
Transmission
8-speed automatic transmission
Engine
Z4 Roadster sDrive28i
Z4 Roadster sDrive18i
Straight-four gasoline engine with turbocharger
Engine Type
Straight-four gasoline engine with turbocharger
BMW N20
Engine Series
BMW N20
N20-B20
Engine Code
N20-B20
4
Valves
4
4
Cylinders
4
2 L / 98 cu in
Displacement
2 L / 98 cu in
242 hp
at 5000 rpm
Power
154 hp
at 5000 rpm
Z4 Roadster sDrive28i
242 hp
154 hp
Z4 Roadster sDrive18i
258 lb‑ft
at 1250 rpm
Max. Torque
177 lb‑ft
at 1250 rpm
Z4 Roadster sDrive28i
258 lb‑ft
177 lb‑ft
Z4 Roadster sDrive18i
Performance
Z4 Roadster sDrive28i
Z4 Roadster sDrive18i
155 mph
Maximum Speed
137 mph
5.7 sec
Acceleration 0 to 62 mph
8.1 sec
62 mph
62
mph
mph
259 ft
0.000 sec
Z4 Roadster sDrive28i
62 mph
62
mph
mph
371 ft
0.000 sec
Z4 Roadster sDrive18i
▶ REPLAY
13.62 lb/hp
Weight-to-Power Ratio
21.4 lb/hp
Z4 Roadster sDrive28i
13.62 lb/hp
21.4 lb/hp
Z4 Roadster sDrive18i
Fuel Economy / Emissions
Z4 Roadster sDrive28i
Z4 Roadster sDrive18i
Fuel Economy
35 mpg
combined
35 mpg
Z4 Roadster sDrive28i
35 mpg
35 mpg
Z4 Roadster sDrive18i
26 mpg
city
25 mpg
No data
highway
No data
14.5 gal
Fuel Tank Capacity
14.5 gal
503 mi
Range
503 mi
Z4 Roadster sDrive28i
503 mi
503 mi
Z4 Roadster sDrive18i
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).
128.7 kWh
Z4 Roadster sDrive28i
128.7 kWh
128.7 kWh
Z4 Roadster sDrive18i
Euro 5
Emission Standard
Euro 6b (NEFZ)
256 g/mi (NEFZ)
CO2 Emissions
256 g/mi (NEFZ)
Practical Convenience
Z4 Roadster sDrive28i
Z4 Roadster sDrive18i
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