The Comparative Analysis :

Mercedes SLK 250 CDI (12 - 15) vs. BMW Z4 Roadster M40i Steptronic Sport (19 - ..)

€ 40,100
Mercedes SLK 250 CDI (12 - 15) Mercedes SLK 250 CDI
€ 61,000
 BMW Z4 Roadster M40i Steptronic Sport (19 - ..) BMW Z4 Roadster M40i
€ 40,100
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 61,000

ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info

Vehicle Dimensions

The Mercedes SLK 250 CDI is considerably smaller in every dimension. It's 7.5 inches shorter, 2.1 inches narrower and 0.1 inches lower than the BMW Z4 Roadster M40i.
Mercedes SLK 250 CDI
BMW Z4 Roadster M40i
51.2
Blueprint Mercedes SLK 250 CDI (12 - 15)
71.3
79
51.3
Blueprint BMW Z4 Roadster M40i Steptronic Sport (19 - ..)
73.4
79.7
71.3 in
Width
73.4 in
79 in
Width Incl. Mirrors
79.7 in
51.2 in
Height
51.3 in
Blueprint Mercedes SLK 250 CDI (12 - 15)
95.7
162.8
Blueprint BMW Z4 Roadster M40i Steptronic Sport (19 - ..)
97.2
170.2
162.8 in
Length
170.2 in
95.7 in
Wheelbase
97.2 in

Vehicle Weight

Mercedes SLK 250 CDI
BMW Z4 Roadster M40i
3461 lb
Curb Weight
3549 lb
4156 lb
Gross Vehicle
Weight
4101 lb
Mercedes SLK 250 CDI (12 - 15)
Weight Difference:
88 lb
2.48 %
BMW Z4 Roadster M40i Steptronic Sport (19 - ..)

General

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

Engine

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

Performance

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

295 ft
0.000 sec

Mercedes SLK 250 CDI

62 mph 62
mph

207 ft
0.000 sec

BMW Z4 Roadster M40i

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

Fuel Economy / Emissions

Mercedes SLK 250 CDI
BMW Z4 Roadster M40i
Fuel Economy
49 mpg
combined
33 mpg
Mercedes SLK 250 CDI
49 mpg
33 mpg
BMW Z4 Roadster M40i
38 mpg
city
26 mpg
59 mpg
highway
No data
Kraftstoffanzeige
15.9 gal
Fuel Tank Capacity
13.7 gal
Kraftstoffanzeige
777 mi
Range
455 mi
Mercedes SLK 250 CDI
777 mi
455 mi
BMW Z4 Roadster M40i
Environmental Impact
98.8 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).
134.5 kWh
Mercedes SLK 250 CDI
98.8 kWh
134.5 kWh
BMW Z4 Roadster M40i
Euro 5
Emission Standard
Euro 6d-TEMP-EVAP-ISC (WLTP)
200 g/mi (NEFZ)
CO2 Emissions
307 g/mi (WLTP)

Practical Convenience

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