The Comparative Analysis :

BMW Z4 Roadster sDrive20i Steptronic Sport (19 - ..) vs. BMW Z4 Roadster sDrive18i Automatic (13 - 16)

€ 43,300
BMW Z4 Roadster sDrive20i Steptronic Sport (19 - ..) Z4 Roadster sDrive20i
€ 36,600
 BMW Z4 Roadster sDrive18i Automatic (13 - 16) Z4 Roadster sDrive18i
€ 43,300
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 Z4 Roadster sDrive20i is slightly bigger in every dimension. It's 3.3 inches longer, 2.9 inches wider and 0.5 inches taller than the Z4 Roadster sDrive18i.
Z4 Roadster sDrive20i
Z4 Roadster sDrive18i
51.3
Blueprint BMW Z4 Roadster sDrive20i Steptronic Sport (19 - ..)
73.4
79.7
50.8
Blueprint BMW Z4 Roadster sDrive18i Automatic (13 - 16)
70.5
76.8
73.4 in
Width
70.5 in
79.7 in
Width Incl. Mirrors
76.8 in
51.3 in
Height
50.8 in
Blueprint BMW Z4 Roadster sDrive20i Steptronic Sport (19 - ..)
97.2
170.2
Blueprint BMW Z4 Roadster sDrive18i Automatic (13 - 16)
98.3
166.9
170.2 in
Length
166.9 in
97.2 in
Wheelbase
98.3 in

Vehicle Weight

Z4 Roadster sDrive20i
Z4 Roadster sDrive18i
3296 lb
Curb Weight
3296 lb
3836 lb
Gross Vehicle
Weight
3858 lb
BMW Z4 Roadster sDrive20i Steptronic Sport (19 - ..)
Weight Difference:
0 lb
0 %
BMW Z4 Roadster sDrive18i Automatic (13 - 16)

General

Z4 Roadster sDrive20i
Z4 Roadster sDrive18i
G29
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 sDrive20i
Z4 Roadster sDrive18i
Straight-four gasoline engine with tur­bo­charger
Engine Type
Straight-four gasoline engine with tur­bo­charger
BMW B48
Engine Series
BMW N20
B48-B20
Engine Code
N20-B20
4
Valves
4
4
Cylinders
4
2 L / 98 cu in
Displacement
2 L / 98 cu in
194 hp
at 4500 rpm
Power
154 hp
at 5000 rpm
Z4 Roadster sDrive20i
194 hp
154 hp
Z4 Roadster sDrive18i
236 lb‑ft
at 1450 rpm
Max. Torque
177 lb‑ft
at 1250 rpm
Z4 Roadster sDrive20i
236 lb‑ft
177 lb‑ft
Z4 Roadster sDrive18i

Performance

Z4 Roadster sDrive20i
Z4 Roadster sDrive18i
149 mph
Maximum Speed
137 mph
6.6 sec
Acceleration 0 to 62 mph
8.1 sec
62 mph 62
mph

302 ft
0.000 sec

Z4 Roadster sDrive20i

62 mph 62
mph

371 ft
0.000 sec

Z4 Roadster sDrive18i

▶ REPLAY
16.99 lb/hp
Weight-to-Power Ratio
21.4 lb/hp
Z4 Roadster sDrive20i
16.99 lb/hp
21.4 lb/hp
Z4 Roadster sDrive18i

Fuel Economy / Emissions

Z4 Roadster sDrive20i
Z4 Roadster sDrive18i
Fuel Economy
39 mpg
combined
35 mpg
Z4 Roadster sDrive20i
39 mpg
35 mpg
Z4 Roadster sDrive18i
32 mpg
city
25 mpg
No data
highway
No data
Kraftstoffanzeige
13.7 gal
Fuel Tank Capacity
14.5 gal
Kraftstoffanzeige
529 mi
Range
503 mi
Z4 Roadster sDrive20i
529 mi
503 mi
Z4 Roadster sDrive18i
Environmental Impact
115.6 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
115.6 kWh
128.7 kWh
Z4 Roadster sDrive18i
Euro 6d-TEMP-EVAP (WLTP)
Emission Standard
Euro 6b (NEFZ)
269 g/mi (WLTP)
CO2 Emissions
256 g/mi (NEFZ)

Practical Convenience

Z4 Roadster sDrive20i
Z4 Roadster sDrive18i
2
Doors
2
2
No. of Seats
2
540 lb
Maximum Payload
562 lb
8 cu ft
Trunk Volume
8.8 cu ft
No data
Cargo Volume (Seats Down)
No data