The Comparative Analysis :

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

€ 43,600
BMW Z4 Roadster sDrive28i (11 - 13) Z4 Roadster sDrive28i
€ 39,000
 BMW Z4 Roadster sDrive20i Sport-Automatic (11 - 13) Z4 Roadster sDrive20i
€ 43,600
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 39,000

ⓘ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 sDrive20i are absolutely identical. Both are 166.9 inches long, 70.5 inches wide and 50.8 inches tall.
Z4 Roadster sDrive28i
Z4 Roadster sDrive20i
50.8
Blueprint BMW Z4 Roadster sDrive28i (11 - 13)
70.5
76.8
50.8
Blueprint BMW Z4 Roadster sDrive20i Sport-Automatic (11 - 13)
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 sDrive28i (11 - 13)
98.3
166.9
Blueprint BMW Z4 Roadster sDrive20i Sport-Automatic (11 - 13)
98.3
166.9
166.9 in
Length
166.9 in
98.3 in
Wheelbase
98.3 in

Vehicle Weight

Z4 Roadster sDrive28i
Z4 Roadster sDrive20i
3252 lb
Curb Weight
3296 lb
3814 lb
Gross Vehicle
Weight
3858 lb
BMW Z4 Roadster sDrive28i (11 - 13)
Weight Difference:
44 lb
1.33 %
BMW Z4 Roadster sDrive20i Sport-Automatic (11 - 13)

General

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

Performance

Z4 Roadster sDrive28i
Z4 Roadster sDrive20i
155 mph
Maximum Speed
144 mph
5.7 sec
Acceleration 0 to 62 mph
7.2 sec
62 mph 62
mph

259 ft
0.000 sec

Z4 Roadster sDrive28i

62 mph 62
mph

328 ft
0.000 sec

Z4 Roadster sDrive20i

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

Fuel Economy / Emissions

Z4 Roadster sDrive28i
Z4 Roadster sDrive20i
Fuel Economy
35 mpg
combined
35 mpg
Z4 Roadster sDrive28i
35 mpg
35 mpg
Z4 Roadster sDrive20i
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 sDrive28i
503 mi
503 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).
128.7 kWh
Z4 Roadster sDrive28i
128.7 kWh
128.7 kWh
Z4 Roadster sDrive20i
Euro 5
Emission Standard
Euro 5
256 g/mi (NEFZ)
CO2 Emissions
256 g/mi (NEFZ)

Practical Convenience

Z4 Roadster sDrive28i
Z4 Roadster sDrive20i
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