The Comparative Analysis :
BMW Z4 Roadster sDrive28i Sport-Automatic (11 - 13) vs. Mercedes SLK 350 Sportmotor 7G-TRONIC (08 - 11)
€ 46,000

€ 50,000

€ 46,000
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 50,000
ⓘ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 sDrive28i is 5.2 inches longer, 0.1 inches wider and 0.3 inches lower than the Mercedes SLK 350 Sportmotor.
BMW Z4 Roadster sDrive28i
Mercedes SLK 350 Sportmotor
50.8
70.5
76.8
51.1
70.4
78.9
70.5 in
Width
70.4 in
76.8 in
Width Incl. Mirrors
78.9 in
50.8 in
Height
51.1 in
98.3
166.9
95.7
161.7
166.9 in
Length
161.7 in
98.3 in
Wheelbase
95.7 in
Vehicle Weight
BMW Z4 Roadster sDrive28i
Mercedes SLK 350 Sportmotor
3296 lb
Curb Weight
3274 lb
3858 lb
Gross Vehicle
Weight
Weight
3968 lb

Weight Difference:
22 lb
0.67 %

General
BMW Z4 Roadster sDrive28i
Mercedes SLK 350 Sportmotor
E89
Generation
R171
Roadster
Car Body Style
Roadster
Premium Unleaded
Fuel Type
Mid-Grade Unleaded

Rear-wheel drive
Drivetrain
Rear-wheel drive

8-speed automatic transmission
Transmission
7-speed automatic transmission
Engine
BMW Z4 Roadster sDrive28i
Mercedes SLK 350 Sportmotor
Straight-four gasoline engine with turbocharger
Engine Type
V6 gasoline engine (naturally aspirated engine)
BMW N20
Engine Series
Mercedes-Benz M 272
N20-B20
Engine Code
M 272.969


4
Valves
4
4
Cylinders
6
2 L / 98 cu in
Displacement
3.5 L / 171 cu in
242 hp
at 5000 rpm
Power
301 hp
at 6500 rpm
BMW Z4 Roadster sDrive28i
242 hp
301 hp
Mercedes SLK 350 Sportmotor
258 lb‑ft
at 1250 rpm
Max. Torque
266 lb‑ft
at 4900 rpm
BMW Z4 Roadster sDrive28i
258 lb‑ft
266 lb‑ft
Mercedes SLK 350 Sportmotor
Performance
BMW Z4 Roadster sDrive28i
Mercedes SLK 350 Sportmotor
155 mph
Maximum Speed
155 mph
5.7 sec
Acceleration 0 to 62 mph
5.4 sec
62 mph
62
mph
mph
259 ft
0.000 sec

BMW Z4 Roadster sDrive28i
62 mph
62
mph
mph
246 ft
0.000 sec

Mercedes SLK 350 Sportmotor
▶ REPLAY
13.62 lb/hp
Weight-to-Power Ratio
10.88 lb/hp
BMW Z4 Roadster sDrive28i
13.62 lb/hp
10.88 lb/hp
Mercedes SLK 350 Sportmotor
Fuel Economy / Emissions
BMW Z4 Roadster sDrive28i
Mercedes SLK 350 Sportmotor
Fuel Economy
35 mpg
combined
26 mpg
BMW Z4 Roadster sDrive28i
35 mpg
26 mpg
Mercedes SLK 350 Sportmotor
26 mpg
city
18 mpg
No data
highway
34 mpg
14.5 gal
Fuel Tank Capacity
18.5 gal
503 mi
Range
473 mi
BMW Z4 Roadster sDrive28i
503 mi
473 mi
Mercedes SLK 350 Sportmotor
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).
174.3 kWh
BMW Z4 Roadster sDrive28i
128.7 kWh
174.3 kWh
Mercedes SLK 350 Sportmotor
Euro 5
Emission Standard
Euro 4 / Euro 5
256 g/mi (NEFZ)
CO2 Emissions
352 g/mi (NEFZ)
Practical Convenience
BMW Z4 Roadster sDrive28i
Mercedes SLK 350 Sportmotor
2
Doors
2
2
No. of Seats
2
562 lb
Maximum Payload
694 lb
8.8 cu ft
Trunk Volume
8.5 cu ft








No data
Cargo Volume (Seats Down)
No data