The Comparative Analysis :
BMW Z4 Roadster sDrive20i (19 - ..) vs. Mercedes SLK 250 CDI 7G-TRONIC PLUS (11 - 15)
€ 41,000

€ 42,500

€ 41,000
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 42,500
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The BMW Z4 Roadster sDrive20i is considerably bigger in every dimension. It's 7.5 inches longer, 2.1 inches wider and 0.1 inches taller than the Mercedes SLK 250 CDI.
BMW Z4 Roadster sDrive20i
Mercedes SLK 250 CDI
51.3
73.4
79.7
51.2
71.3
79
73.4 in
Width
71.3 in
79.7 in
Width Incl. Mirrors
79 in
51.3 in
Height
51.2 in
97.2
170.2
95.7
162.8
170.2 in
Length
162.8 in
97.2 in
Wheelbase
95.7 in
Vehicle Weight
BMW Z4 Roadster sDrive20i
Mercedes SLK 250 CDI
3263 lb
Curb Weight
3505 lb
3803 lb
Gross Vehicle
Weight
Weight
4200 lb

Weight Difference:
243 lb
6.93 %

General
BMW Z4 Roadster sDrive20i
Mercedes SLK 250 CDI
G29
Generation
R172
Roadster
Car Body Style
Roadster
Premium Unleaded
Fuel Type
Diesel

Rear-wheel drive
Drivetrain
Rear-wheel drive

6-speed manual transmission
Transmission
7-speed automatic transmission
Engine
BMW Z4 Roadster sDrive20i
Mercedes SLK 250 CDI
Straight-four gasoline engine with turbocharger
Engine Type
Straight-four diesel engine with two turbochargers (biturbo)
BMW B48
Engine Series
Mercedes-Benz OM 651
B48-B20
Engine Code
OM 651.980


4
Valves
4
4
Cylinders
4
2 L / 98 cu in
Displacement
2.1 L / 103 cu in
194 hp
at 4500 rpm
Power
201 hp
at 4200 rpm
BMW Z4 Roadster sDrive20i
194 hp
201 hp
Mercedes SLK 250 CDI
236 lb‑ft
at 1450 rpm
Max. Torque
369 lb‑ft
at 1600 rpm
BMW Z4 Roadster sDrive20i
236 lb‑ft
369 lb‑ft
Mercedes SLK 250 CDI
Performance
BMW Z4 Roadster sDrive20i
Mercedes SLK 250 CDI
150 mph
Maximum Speed
151 mph
6.8 sec
Acceleration 0 to 62 mph
6.7 sec
62 mph
62
mph
mph
308 ft
0.000 sec

BMW Z4 Roadster sDrive20i
62 mph
62
mph
mph
305 ft
0.000 sec

Mercedes SLK 250 CDI
▶ REPLAY
16.82 lb/hp
Weight-to-Power Ratio
17.44 lb/hp
BMW Z4 Roadster sDrive20i
16.82 lb/hp
17.44 lb/hp
Mercedes SLK 250 CDI
Fuel Economy / Emissions
BMW Z4 Roadster sDrive20i
Mercedes SLK 250 CDI
Fuel Economy
35 mpg
combined
48 mpg
BMW Z4 Roadster sDrive20i
35 mpg
48 mpg
Mercedes SLK 250 CDI
26 mpg
city
39 mpg
No data
highway
57 mpg
13.7 gal
Fuel Tank Capacity
15.9 gal
475 mi
Range
761 mi
BMW Z4 Roadster sDrive20i
475 mi
761 mi
Mercedes SLK 250 CDI
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).
100.7 kWh
BMW Z4 Roadster sDrive20i
128.7 kWh
100.7 kWh
Mercedes SLK 250 CDI
Euro 6d-TEMP-EVAP-ISC (WLTP)
Emission Standard
Euro 5
264 g/mi (WLTP)
CO2 Emissions
206 g/mi (NEFZ)
Practical Convenience
BMW Z4 Roadster sDrive20i
Mercedes SLK 250 CDI
2
Doors
2
2
No. of Seats
2
540 lb
Maximum Payload
694 lb
8 cu ft
Trunk Volume
9.5 cu ft








No data
Cargo Volume (Seats Down)
No data