The Comparative Analysis :
Mercedes SLC 250 d 9G-TRONIC (16 - 17) vs. BMW Z4 Roadster M40i Steptronic Sport (19 - ..)
€ 43,900

€ 61,000

€ 43,900
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 SLC 250 d 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 SLC 250 d
BMW Z4 Roadster M40i
51.2
71.3
79
51.3
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
95.7
162.7
97.2
170.2
162.7 in
Length
170.2 in
95.7 in
Wheelbase
97.2 in
Vehicle Weight
Mercedes SLC 250 d
BMW Z4 Roadster M40i
3538 lb
Curb Weight
3549 lb
4200 lb
Gross Vehicle
Weight
Weight
4101 lb

Weight Difference:
11 lb
0.31 %

General
Mercedes SLC 250 d
BMW Z4 Roadster M40i
R172
Generation
G29
Roadster
Car Body Style
Roadster
Diesel
Fuel Type
Premium Unleaded

Rear-wheel drive
Drivetrain
Rear-wheel drive

9-speed automatic transmission
Transmission
8-speed automatic transmission
Engine
Mercedes SLC 250 d
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 3800 rpm
Power
335 hp
at 5000 rpm
Mercedes SLC 250 d
201 hp
335 hp
BMW Z4 Roadster M40i
369 lb‑ft
at 1600 rpm
Max. Torque
369 lb‑ft
at 1600 rpm
Mercedes SLC 250 d
369 lb‑ft
369 lb‑ft
BMW Z4 Roadster M40i
Performance
Mercedes SLC 250 d
BMW Z4 Roadster M40i
152 mph
Maximum Speed
155 mph
6.6 sec
Acceleration 0 to 62 mph
4.5 sec
62 mph
62
mph
mph
302 ft
0.000 sec

Mercedes SLC 250 d
62 mph
62
mph
mph
207 ft
0.000 sec

BMW Z4 Roadster M40i
▶ REPLAY
17.6 lb/hp
Weight-to-Power Ratio
10.59 lb/hp
Mercedes SLC 250 d
17.6 lb/hp
10.59 lb/hp
BMW Z4 Roadster M40i
Fuel Economy / Emissions
Mercedes SLC 250 d
BMW Z4 Roadster M40i
Fuel Economy
53 mpg
combined
33 mpg
Mercedes SLC 250 d
53 mpg
33 mpg
BMW Z4 Roadster M40i
45 mpg
city
26 mpg
60 mpg
highway
No data
15.9 gal
Fuel Tank Capacity
13.7 gal
848 mi
Range
455 mi
Mercedes SLC 250 d
848 mi
455 mi
BMW Z4 Roadster M40i
Environmental Impact
90.4 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).
134.5 kWh
Mercedes SLC 250 d
90.4 kWh
134.5 kWh
BMW Z4 Roadster M40i
Euro 6b (NEFZ)
Emission Standard
Euro 6d-TEMP-EVAP-ISC (WLTP)
183 g/mi (NEFZ)
CO2 Emissions
307 g/mi (WLTP)
Practical Convenience
Mercedes SLC 250 d
BMW Z4 Roadster M40i
2
Doors
2
2
No. of Seats
2
661 lb
Maximum Payload
551 lb
9.5 cu ft
Trunk Volume
8 cu ft








No data
Cargo Volume (Seats Down)
No data