The Comparative Analysis :

BMW Z4 Roadster sDrive28i (11 - 13) vs. BMW Z4 Roadster sDrive20i Steptronic Sport (19 - ..)

€ 43,600
BMW Z4 Roadster sDrive28i (11 - 13) Z4 Roadster sDrive28i
€ 43,300
 BMW Z4 Roadster sDrive20i Steptronic Sport (19 - ..) Z4 Roadster sDrive20i
€ 43,600
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 8.5 cm shorter, 7.4 cm narrower and 1.3 cm lower than the Z4 Roadster sDrive20i.
Z4 Roadster sDrive28i
Z4 Roadster sDrive20i
1291
Blueprint BMW Z4 Roadster sDrive28i (11 - 13)
1790
1951
1304
Blueprint BMW Z4 Roadster sDrive20i Steptronic Sport (19 - ..)
1864
2024
1790 mm
Width
1864 mm
1951 mm
Width Incl. Mirrors
2024 mm
1291 mm
Height
1304 mm
Blueprint BMW Z4 Roadster sDrive28i (11 - 13)
2496
4239
Blueprint BMW Z4 Roadster sDrive20i Steptronic Sport (19 - ..)
2470
4324
4239 mm
Length
4324 mm
2496 mm
Wheelbase
2470 mm

Vehicle Weight

Z4 Roadster sDrive28i
Z4 Roadster sDrive20i
1475 kg
Kerb Weight
1495 kg
1730 kg
Gross Vehicle
Weight
1740 kg
BMW Z4 Roadster sDrive28i (11 - 13)
Weight Difference:
20 kg
1.34 %
BMW Z4 Roadster sDrive20i Steptronic Sport (19 - ..)

General

Z4 Roadster sDrive28i
Z4 Roadster sDrive20i
E89
Generation
G29
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

Z4 Roadster sDrive28i
Z4 Roadster sDrive20i
Straight-four petrol engine with tur­bo­charger
Engine Type
Straight-four petrol engine with tur­bo­charger
BMW N20
Engine Series
BMW B48
N20-B20
Engine Code
B48-B20
4
Valves
4
4
Cylinders
4
1997 CC
Engine Capacity
1998 CC
242 bhp
at 5000 rpm
Power
194 bhp
at 4500 rpm
Z4 Roadster sDrive28i
242 bhp
194 bhp
Z4 Roadster sDrive20i
350 NM
at 1250 rpm
Max. Torque
320 NM
at 1450 rpm
Z4 Roadster sDrive28i
350 NM
320 NM
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

79 m
0.000 sec

Z4 Roadster sDrive28i

62 mph 62
mph

92 m
0.000 sec

Z4 Roadster sDrive20i

▶ REPLAY
6.1 kg/bhp
Weight-to-Power Ratio
7.71 kg/bhp
Z4 Roadster sDrive28i
6.1 kg/bhp
7.71 kg/bhp
Z4 Roadster sDrive20i

Fuel Economy / Emissions

Z4 Roadster sDrive28i
Z4 Roadster sDrive20i
Fuel Economy
42 mpg
combined
46 mpg
Z4 Roadster sDrive28i
42 mpg
46 mpg
Z4 Roadster sDrive20i
32 mpg
city
39 mpg
No data
motorway
No data
Kraftstoffanzeige
55 L
Fuel Tank Capacity
52 L
Kraftstoffanzeige
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).
115.6 kWh
Z4 Roadster sDrive28i
128.7 kWh
115.6 kWh
Z4 Roadster sDrive20i
Euro 5
Emission Standard
Euro 6d-TEMP-EVAP (WLTP)
159 g/km (NEFZ)
CO2 Emissions
167 g/km (WLTP)

Practical Convenience

Z4 Roadster sDrive28i
Z4 Roadster sDrive20i
2
Doors
2
2
No. of Seats
2
255 kg
Maximum Payload
245 kg
310 L
Boot Capacity
281 L
No data
Boot Capacity (Seats Down)
No data