The Comparative Analysis :

BMW Z4 Roadster M40i Steptronic Sport (19 - ..) vs. Mercedes SLK 250 CDI 7G-TRONIC PLUS (11 - 15)

€ 61,000
BMW Z4 Roadster M40i Steptronic Sport (19 - ..) BMW Z4 Roadster M40i
€ 42,500
 Mercedes SLK 250 CDI 7G-TRONIC PLUS (11 - 15) Mercedes SLK 250 CDI
€ 61,000
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 M40i 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 M40i
Mercedes SLK 250 CDI
51.3
Blueprint BMW Z4 Roadster M40i Steptronic Sport (19 - ..)
73.4
79.7
51.2
Blueprint Mercedes SLK 250 CDI 7G-TRONIC PLUS (11 - 15)
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
Blueprint BMW Z4 Roadster M40i Steptronic Sport (19 - ..)
97.2
170.2
Blueprint Mercedes SLK 250 CDI 7G-TRONIC PLUS (11 - 15)
95.7
162.8
170.2 in
Length
162.8 in
97.2 in
Wheelbase
95.7 in

Vehicle Weight

BMW Z4 Roadster M40i
Mercedes SLK 250 CDI
3549 lb
Curb Weight
3505 lb
4101 lb
Gross Vehicle
Weight
4200 lb
BMW Z4 Roadster M40i Steptronic Sport (19 - ..)
Weight Difference:
44 lb
1.24 %
Mercedes SLK 250 CDI 7G-TRONIC PLUS (11 - 15)

General

BMW Z4 Roadster M40i
Mercedes SLK 250 CDI
G29
Generation
R172
Roadster
Car Body Style
Roadster
Premium Unleaded
Fuel Type
Diesel
Rear-wheel drive
Drivetrain
Rear-wheel drive
8-speed automatic transmission
Transmission
7-speed automatic transmission

Engine

BMW Z4 Roadster M40i
Mercedes SLK 250 CDI
Straight-six gasoline engine with two tur­bo­chargers (bi­turbo)
Engine Type
Straight-four diesel engine with two tur­bo­chargers (bi­turbo)
BMW B58
Engine Series
Mercedes-Benz OM 651
B58-B30
Engine Code
OM 651.980
4
Valves
4
6
Cylinders
4
3 L / 147 cu in
Displacement
2.1 L / 103 cu in
335 hp
at 5000 rpm
Power
201 hp
at 4200 rpm
BMW Z4 Roadster M40i
335 hp
201 hp
Mercedes SLK 250 CDI
369 lb‑ft
at 1600 rpm
Max. Torque
369 lb‑ft
at 1600 rpm
BMW Z4 Roadster M40i
369 lb‑ft
369 lb‑ft
Mercedes SLK 250 CDI

Performance

BMW Z4 Roadster M40i
Mercedes SLK 250 CDI
155 mph
Maximum Speed
151 mph
4.5 sec
Acceleration 0 to 62 mph
6.7 sec
62 mph 62
mph

207 ft
0.000 sec

BMW Z4 Roadster M40i

62 mph 62
mph

305 ft
0.000 sec

Mercedes SLK 250 CDI

▶ REPLAY
10.59 lb/hp
Weight-to-Power Ratio
17.44 lb/hp
BMW Z4 Roadster M40i
10.59 lb/hp
17.44 lb/hp
Mercedes SLK 250 CDI

Fuel Economy / Emissions

BMW Z4 Roadster M40i
Mercedes SLK 250 CDI
Fuel Economy
33 mpg
combined
48 mpg
BMW Z4 Roadster M40i
33 mpg
48 mpg
Mercedes SLK 250 CDI
26 mpg
city
39 mpg
No data
highway
57 mpg
Kraftstoffanzeige
13.7 gal
Fuel Tank Capacity
15.9 gal
Kraftstoffanzeige
455 mi
Range
761 mi
BMW Z4 Roadster M40i
455 mi
761 mi
Mercedes SLK 250 CDI
Environmental Impact
134.5 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).
100.7 kWh
BMW Z4 Roadster M40i
134.5 kWh
100.7 kWh
Mercedes SLK 250 CDI
Euro 6d-TEMP-EVAP-ISC (WLTP)
Emission Standard
Euro 5
307 g/mi (WLTP)
CO2 Emissions
206 g/mi (NEFZ)

Practical Convenience

BMW Z4 Roadster M40i
Mercedes SLK 250 CDI
2
Doors
2
2
No. of Seats
2
551 lb
Maximum Payload
694 lb
8 cu ft
Trunk Volume
9.5 cu ft
No data
Cargo Volume (Seats Down)
No data