The Comparative Analysis :
BMW Z4 Roadster sDrive20i (11 - 13) vs. Mercedes SLK 55 AMG 7G-TRONIC (08 - 11)
€ 36,600
€ 70,700
€ 36,600
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 70,700
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The dimensions of these vehicles differ slightly. The BMW Z4 Roadster sDrive20i is 5.4 inches longer, 0.2 inches narrower and 0.8 inches taller than the Mercedes SLK 55 AMG.
BMW Z4 Roadster sDrive20i
Mercedes SLK 55 AMG
50.8
70.5
76.8
50
70.6
78.9
70.5 in
Width
70.6 in
76.8 in
Width Incl. Mirrors
78.9 in
50.8 in
Height
50 in
98.3
166.9
95.7
161.5
166.9 in
Length
161.5 in
98.3 in
Wheelbase
95.7 in
Vehicle Weight
BMW Z4 Roadster sDrive20i
Mercedes SLK 55 AMG
3241 lb
Curb Weight
3472 lb
3803 lb
Gross Vehicle
Weight
Weight
4079 lb
Weight Difference:
231 lb
6.65 %
General
BMW Z4 Roadster sDrive20i
Mercedes SLK 55 AMG
E89
Generation
R171
Roadster
Car Body Style
Roadster
Premium Unleaded
Fuel Type
Premium Unleaded
Rear-wheel drive
Drivetrain
Rear-wheel drive
6-speed manual transmission
Transmission
7-speed automatic transmission
Engine
BMW Z4 Roadster sDrive20i
Mercedes SLK 55 AMG
Straight-four gasoline engine with turbocharger
Engine Type
V8 gasoline engine (naturally aspirated engine)
BMW N20
Engine Series
Mercedes-Benz M 113
N20-B20
Engine Code
M 113.989
4
Valves
3
4
Cylinders
8
2 L / 98 cu in
Displacement
5.4 L / 264 cu in
181 hp
at 5000 rpm
Power
355 hp
at 5750 rpm
BMW Z4 Roadster sDrive20i
181 hp
355 hp
Mercedes SLK 55 AMG
199 lb‑ft
at 1250 rpm
Max. Torque
376 lb‑ft
at 4000 rpm
BMW Z4 Roadster sDrive20i
199 lb‑ft
376 lb‑ft
Mercedes SLK 55 AMG
Performance
BMW Z4 Roadster sDrive20i
Mercedes SLK 55 AMG
146 mph
Maximum Speed
155 mph
6.9 sec
Acceleration 0 to 62 mph
4.9 sec
62 mph
62
mph
mph
315 ft
0.000 sec
BMW Z4 Roadster sDrive20i
62 mph
62
mph
mph
223 ft
0.000 sec
Mercedes SLK 55 AMG
▶ REPLAY
17.91 lb/hp
Weight-to-Power Ratio
9.78 lb/hp
BMW Z4 Roadster sDrive20i
17.91 lb/hp
9.78 lb/hp
Mercedes SLK 55 AMG
Fuel Economy / Emissions
BMW Z4 Roadster sDrive20i
Mercedes SLK 55 AMG
Fuel Economy
35 mpg
combined
20 mpg
BMW Z4 Roadster sDrive20i
35 mpg
20 mpg
Mercedes SLK 55 AMG
26 mpg
city
13 mpg
No data
highway
27 mpg
14.5 gal
Fuel Tank Capacity
18.5 gal
503 mi
Range
362 mi
BMW Z4 Roadster sDrive20i
503 mi
362 mi
Mercedes SLK 55 AMG
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).
227.4 kWh
BMW Z4 Roadster sDrive20i
128.7 kWh
227.4 kWh
Mercedes SLK 55 AMG
Euro 5
Emission Standard
Euro 4
256 g/mi (NEFZ)
CO2 Emissions
463 g/mi (NEFZ)
Practical Convenience
BMW Z4 Roadster sDrive20i
Mercedes SLK 55 AMG
2
Doors
2
2
No. of Seats
2
562 lb
Maximum Payload
606 lb
8.8 cu ft
Trunk Volume
8.5 cu ft
No data
Cargo Volume (Seats Down)
No data
