The Comparative Analysis :

BMW Z4 Roadster sDrive20i (13 - 16) vs. BMW Z4 Roadster sDrive28i (13 - 16)

€ 37,300
BMW Z4 Roadster sDrive20i (13 - 16) Z4 Roadster sDrive20i
€ 44,300
 BMW Z4 Roadster sDrive28i (13 - 16) Z4 Roadster sDrive28i
€ 37,300
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 44,300

ⓘ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 sDrive28i are absolutely identical. Both are 166.9 inches long, 70.5 inches wide and 50.8 inches tall.
Z4 Roadster sDrive20i
Z4 Roadster sDrive28i
50.8
Blueprint BMW Z4 Roadster sDrive20i (13 - 16)
70.5
76.8
50.8
Blueprint BMW Z4 Roadster sDrive28i (13 - 16)
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
Blueprint BMW Z4 Roadster sDrive20i (13 - 16)
98.3
166.9
Blueprint BMW Z4 Roadster sDrive28i (13 - 16)
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 sDrive28i
3241 lb
Curb Weight
3252 lb
3803 lb
Gross Vehicle
Weight
3814 lb
BMW Z4 Roadster sDrive20i (13 - 16)
Weight Difference:
11 lb
0.34 %
BMW Z4 Roadster sDrive28i (13 - 16)

General

Z4 Roadster sDrive20i
Z4 Roadster sDrive28i
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 manual transmission

Engine

Z4 Roadster sDrive20i
Z4 Roadster sDrive28i
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
181 hp
at 5000 rpm
Power
242 hp
at 5000 rpm
Z4 Roadster sDrive20i
181 hp
242 hp
Z4 Roadster sDrive28i
199 lb‑ft
at 1250 rpm
Max. Torque
258 lb‑ft
at 1250 rpm
Z4 Roadster sDrive20i
199 lb‑ft
258 lb‑ft
Z4 Roadster sDrive28i

Performance

Z4 Roadster sDrive20i
Z4 Roadster sDrive28i
146 mph
Maximum Speed
155 mph
6.9 sec
Acceleration 0 to 62 mph
5.7 sec
62 mph 62
mph

315 ft
0.000 sec

Z4 Roadster sDrive20i

62 mph 62
mph

259 ft
0.000 sec

Z4 Roadster sDrive28i

▶ REPLAY
17.91 lb/hp
Weight-to-Power Ratio
13.44 lb/hp
Z4 Roadster sDrive20i
17.91 lb/hp
13.44 lb/hp
Z4 Roadster sDrive28i

Fuel Economy / Emissions

Z4 Roadster sDrive20i
Z4 Roadster sDrive28i
Fuel Economy
35 mpg
combined
35 mpg
Z4 Roadster sDrive20i
35 mpg
35 mpg
Z4 Roadster sDrive28i
26 mpg
city
26 mpg
No data
highway
No data
Kraftstoffanzeige
14.5 gal
Fuel Tank Capacity
14.5 gal
Kraftstoffanzeige
503 mi
Range
503 mi
Z4 Roadster sDrive20i
503 mi
503 mi
Z4 Roadster sDrive28i
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).
128.7 kWh
Z4 Roadster sDrive20i
128.7 kWh
128.7 kWh
Z4 Roadster sDrive28i
Euro 6b (NEFZ)
Emission Standard
Euro 6b (NEFZ)
256 g/mi (NEFZ)
CO2 Emissions
256 g/mi (NEFZ)

Practical Convenience

Z4 Roadster sDrive20i
Z4 Roadster sDrive28i
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