The Comparative Analysis :
Mercedes SLK 250 CDI 7G-TRONIC PLUS (11 - 15) vs. BMW Z4 Roadster sDrive28i Automatic (13 - 16)
€ 42,500

€ 46,600

€ 42,500
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 46,600
ⓘ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 Mercedes SLK 250 CDI is 4.1 inches shorter, 0.8 inches wider and 0.4 inches taller than the BMW Z4 Roadster sDrive28i.
Mercedes SLK 250 CDI
BMW Z4 Roadster sDrive28i
51.2
71.3
79
50.8
70.5
76.8
71.3 in
Width
70.5 in
79 in
Width Incl. Mirrors
76.8 in
51.2 in
Height
50.8 in
95.7
162.8
98.3
166.9
162.8 in
Length
166.9 in
95.7 in
Wheelbase
98.3 in
Vehicle Weight
Mercedes SLK 250 CDI
BMW Z4 Roadster sDrive28i
3505 lb
Curb Weight
3296 lb
4200 lb
Gross Vehicle
Weight
Weight
3858 lb

Weight Difference:
209 lb
5.96 %

General
Mercedes SLK 250 CDI
BMW Z4 Roadster sDrive28i
R172
Generation
E89
Roadster
Car Body Style
Roadster
Diesel
Fuel Type
Premium Unleaded

Rear-wheel drive
Drivetrain
Rear-wheel drive

7-speed automatic transmission
Transmission
8-speed automatic transmission
Engine
Mercedes SLK 250 CDI
BMW Z4 Roadster sDrive28i
Straight-four diesel engine with two turbochargers (biturbo)
Engine Type
Straight-four gasoline engine with turbocharger
Mercedes-Benz OM 651
Engine Series
BMW N20
OM 651.980
Engine Code
N20-B20


4
Valves
4
4
Cylinders
4
2.1 L / 103 cu in
Displacement
2 L / 98 cu in
201 hp
at 4200 rpm
Power
242 hp
at 5000 rpm
Mercedes SLK 250 CDI
201 hp
242 hp
BMW Z4 Roadster sDrive28i
369 lb‑ft
at 1600 rpm
Max. Torque
258 lb‑ft
at 1250 rpm
Mercedes SLK 250 CDI
369 lb‑ft
258 lb‑ft
BMW Z4 Roadster sDrive28i
Performance
Mercedes SLK 250 CDI
BMW Z4 Roadster sDrive28i
151 mph
Maximum Speed
155 mph
6.7 sec
Acceleration 0 to 62 mph
5.7 sec
62 mph
62
mph
mph
305 ft
0.000 sec

Mercedes SLK 250 CDI
62 mph
62
mph
mph
259 ft
0.000 sec

BMW Z4 Roadster sDrive28i
▶ REPLAY
17.44 lb/hp
Weight-to-Power Ratio
13.62 lb/hp
Mercedes SLK 250 CDI
17.44 lb/hp
13.62 lb/hp
BMW Z4 Roadster sDrive28i
Fuel Economy / Emissions
Mercedes SLK 250 CDI
BMW Z4 Roadster sDrive28i
Fuel Economy
48 mpg
combined
35 mpg
Mercedes SLK 250 CDI
48 mpg
35 mpg
BMW Z4 Roadster sDrive28i
39 mpg
city
25 mpg
57 mpg
highway
No data
15.9 gal
Fuel Tank Capacity
14.5 gal
761 mi
Range
503 mi
Mercedes SLK 250 CDI
761 mi
503 mi
BMW Z4 Roadster sDrive28i
Environmental Impact
100.7 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).
128.7 kWh
Mercedes SLK 250 CDI
100.7 kWh
128.7 kWh
BMW Z4 Roadster sDrive28i
Euro 5
Emission Standard
Euro 6b (NEFZ)
206 g/mi (NEFZ)
CO2 Emissions
256 g/mi (NEFZ)
Practical Convenience
Mercedes SLK 250 CDI
BMW Z4 Roadster sDrive28i
2
Doors
2
2
No. of Seats
2
694 lb
Maximum Payload
562 lb
9.5 cu ft
Trunk Volume
8.8 cu ft








No data
Cargo Volume (Seats Down)
No data