The Comparative Analysis :
BMW Z4 Roadster sDrive28i Sport-Automatic (11 - 13) vs. BMW Z4 Roadster sDrive20i Steptronic Sport (19 - ..)
€ 46,000
Z4 Roadster sDrive28i € 43,300
Z4 Roadster sDrive20i
€ 46,000
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 43,300
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The Z4 Roadster sDrive28i is slightly smaller in every dimension. It's 3.3 inches shorter, 2.9 inches narrower and 0.5 inches lower than the Z4 Roadster sDrive20i.
Z4 Roadster sDrive28i
Z4 Roadster sDrive20i
70.5 in
Width
73.4 in
76.8 in
Width Incl. Mirrors
79.7 in
50.8 in
Height
51.3 in
166.9 in
Length
170.2 in
98.3 in
Wheelbase
97.2 in
Vehicle Weight
Z4 Roadster sDrive28i
Z4 Roadster sDrive20i
3296 lb
Curb Weight
3296 lb
3858 lb
Gross Vehicle
Weight
Weight
3836 lb
Weight Difference:
0 lb
0 %
General
Z4 Roadster sDrive28i
Z4 Roadster sDrive20i
E89
Generation
G29
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 sDrive20i
Straight-four gasoline engine with turbocharger
Engine Type
Straight-four gasoline engine with turbocharger
BMW N20
Engine Series
BMW B48
N20-B20
Engine Code
B48-B20
4
Valves
4
4
Cylinders
4
2 L / 98 cu in
Displacement
2 L / 98 cu in
242 hp
at 5000 rpm
Power
194 hp
at 4500 rpm
Z4 Roadster sDrive28i
242 hp
194 hp
Z4 Roadster sDrive20i
258 lb‑ft
at 1250 rpm
Max. Torque
236 lb‑ft
at 1450 rpm
Z4 Roadster sDrive28i
258 lb‑ft
236 lb‑ft
Z4 Roadster sDrive20i
Performance
Z4 Roadster sDrive28i
Z4 Roadster sDrive20i
155 mph
Maximum Speed
149 mph
5.7 sec
Acceleration 0 to 62 mph
6.6 sec
62 mph
62
mph
mph
259 ft
0.000 sec
Z4 Roadster sDrive28i
62 mph
62
mph
mph
302 ft
0.000 sec
Z4 Roadster sDrive20i
▶ REPLAY
13.62 lb/hp
Weight-to-Power Ratio
16.99 lb/hp
Z4 Roadster sDrive28i
13.62 lb/hp
16.99 lb/hp
Z4 Roadster sDrive20i
Fuel Economy / Emissions
Z4 Roadster sDrive28i
Z4 Roadster sDrive20i
Fuel Economy
35 mpg
combined
39 mpg
Z4 Roadster sDrive28i
35 mpg
39 mpg
Z4 Roadster sDrive20i
26 mpg
city
32 mpg
No data
highway
No data
14.5 gal
Fuel Tank Capacity
13.7 gal
503 mi
Range
529 mi
Z4 Roadster sDrive28i
503 mi
529 mi
Z4 Roadster sDrive20i
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).
115.6 kWh
Z4 Roadster sDrive28i
128.7 kWh
115.6 kWh
Z4 Roadster sDrive20i
Euro 5
Emission Standard
Euro 6d-TEMP-EVAP (WLTP)
256 g/mi (NEFZ)
CO2 Emissions
269 g/mi (WLTP)
Practical Convenience
Z4 Roadster sDrive28i
Z4 Roadster sDrive20i
2
Doors
2
2
No. of Seats
2
562 lb
Maximum Payload
540 lb
8.8 cu ft
Trunk Volume
8 cu ft
No data
Cargo Volume (Seats Down)
No data