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BMW G23 4 Series Cabrio 420i (2021)

Mercedes Benz E Class Cabriolet 300 (2017)

Mercedes Benz Class C Cabrio (A205 2019) 180 Auto (2018)

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Engine Technical Data

Engine type - Number of cylinders

Inline 4

Engine Code

Fuel type

Petrol

Fuel System

Direct Injection

Direct Injection.

Direct Injection

Lubrication

Engine Cooling

Engine Alignment

Longitudinal

Engine Position

Front

Engine displacement

121.9 cu-in / 1998 cm³

121.5 cu-in / 1991 cm³

97.3 cu-in / 1595 cm³

Bore

3.23 inches
82.0 mm

3.27 inches
83.0 mm

Stroke

3.72 inches
94.6 mm

3.62 inches
92.0 mm

2.9 inches
73.7 mm

Number of valves

Aspiration

Turbo Intercooler

Turbo

Turbo Intercooler

Compression Ratio

11.0

9.8

10.3

Max. RPM

Total System Power

181 HP / 184 PS / 135 kW

154 HP / 156 PS / 115 kW

Total System Torque

221 lb-ft / 300 Nm

184 lb-ft / 250 Nm

Horsepower

181 HP / 184 PS / 135 kW @ 5000 rpm

242 HP / 245 PS / 180 kW @ 5500 rpm

154 HP / 156 PS / 115 kW @ 5300 rpm

Maximum torque

221 lb-ft / 300 Nm @ 1350 rpm

272 lb-ft / 370 Nm @ 1400-4400 rpm

184 lb-ft / 250 Nm @ 1250 rpm

Total electric power

Total electric torque

Number of electric engines

Electric engine #1 type

Electric engine #1 Power

Electric engine #1 Torque

Electric engine #2 type

Electric engine #2 Power

Electric engine #2 Torque

Electric engine #3 type

Electric engine #3 Power

Electric engine #3 Torque

Electric engine #4 type

Electric engine #4 Power

Electric engine #4 Torque

Drive wheels - Traction - Drivetrain

RWD

Transmission Gearbox - Number of speeds

Clutch Type

Automatic

Sequential Automatic

Size, Dimensions, Aerodynamics and Weight

Body

Cabrio

Num. of Doors

Num. of Seats

Seat distribution

2+2

Front legroom

Rear seat legroom

Third row legroom

Front shoulder room

Rear shoulder room

Third row shoulder room

Front head room

Rear head room

Third row head room

Wheelbase

112.24 inches / 285.1 cm

113.11 inches / 287.3 cm

111.81 inches / 284.0 cm

Length

187.72 inches / 476.8 cm

190 inches / 482.6 cm

184.49 inches / 468.6 cm

Width

72.91 inches / 185.2 cm

73.23 inches / 186.0 cm

71.26 inches / 181.0 cm

Width with mirrors

Height

54.49 inches / 138.4 cm

56.22 inches / 142.8 cm

55.47 inches / 140.9 cm

Front Axle

62.01 inches / 157.5 cm

63.19 inches / 160.5 cm

61.54 inches / 156.3 cm

Rear Axle

63.43 inches / 161.1 cm

63.35 inches / 160.9 cm

60.87 inches / 154.6 cm

Ground clearance

4.88 inches / 12.4 cm4.88 inches / 12.4 cm

Cargo box inside length

Cargo box inside height

Cargo width

Max. width at wheelhouse

Loading height

Rear door width

Rear door height

Side door width

Side door height

Approach angle (deg)

Breakover (Rampover) angle (deg)

Departure angle (deg)

Aerodynamic drag coefficient - Cx

Front Brakes - Disc dimensions

Vented Discs

Rear Brakes - Disc dimensions

Vented Discs

Discs

Front Tyres - Rims dimensions

225/50 R17

245/45 R18

225/50 R17

Rear Tyres - Rims dimensions

225/50 R17

245/45 R18

225/50 R17

Front Wheels Width

Rear Wheels Width

Curb Weight

3920 lbs / 1778 kg

3715 lbs / 1685 kg

3677 lbs / 1668 kg

Dry Weight

3671 lbs / 1665 kg

3417 lbs / 1550 kg

Max. Towing Capacity Weight

3527 lbs / 1600 kg

3086 lbs / 1400 kg

Weight/Power Output Ratio

9.66 Kg/hp

6.88 Kg/hp

10.69 Kg/hp

Trunk / Boot capacity

13.6 cu-ft / 385 L

- cu-ft / 285-360 L

Trunk / Boot First Row

Trunk / Boot Second Row

Trunk / Boot Third Row

Steering

Rack and pinion Electric

Turning circle

37.4 feet / 11.4 m

36.7 feet / 11.2 m

Steering wheel lock-to-lock

Front Suspension

Independent. McPherson. Coil Springs. Anti-roll bar.

Independent Double wishbone. Coil Springs. Anti-roll bar.

Independent. McPherson. Coil Springs. Anti-roll bar.

Rear Suspension

Multi-link. Coil Springs. Anti-roll bar.

Top Speed

147 Mph / 236 km/h

155 Mph / 250 km/h

137 Mph / 220 km/h

Acceleration 0 to 60 mph (0 to 96 Km/h)

Acceleration 0 to 100 km/h (0 to 62 mph)

8.2 s

6.4 s

8.9 s

Acceleration 0 to 400m (1/4 quarter mile)

Acceleration 0 to 1000m

Fuel Consumption (Economy), Emissions and Range

Fuel Consumption - Economy - Combined

36 MPG
6.5 L/100 km
43 MPG UK

Fuel Consumption - Economy - Open road

Fuel Consumption - Economy - Highway

Fuel Consumption - Economy - City

Fuel Consumption - Economy - City NEDC

33 MPG
7.1 L/100 km
40 MPG UK

27 MPG
8.6 L/100 km
33 MPG UK

Fuel Consumption - Economy - Open road NEDC

48 MPG
4.9 L/100 km
58 MPG UK

43 MPG
5.5 L/100 km
51 MPG UK

Fuel Consumption - Economy - Combined NEDC

41 MPG
5.7 L/100 km
50 MPG UK

36 MPG
6.6 L/100 km
43 MPG UK

36 MPG
6.5 L/100 km
43 MPG UK

Fuel Consumption - Economy - Low WLTP

Fuel Consumption - Economy - Medium WLTP

Fuel Consumption - Economy - High WLTP

Fuel Consumption - Economy - Extra high WLTP

Fuel Consumption - Economy - Combined WLTP

35 MPG
6.7 L/100 km
42 MPG UK

Battery Type

Charging Information

Battery capacity

Charging Time

Range

631 miles / 1015 km

Range WLTP

548 miles / 881 km

Electric Range EPA

Electric Range NEDC

Electric Range WLTP

Average energy consumption

Average energy consumption WLTP

Charging Time

Fast Charging Time

Fuel Tank Capacity

15.6 gallons
59 L
13 UK gallons

17.4 gallons
66 L
14.5 UK gallons

AdBlue Tank

CO2 emissions

131 g/Km (BMW)

150 g/Km (Mercedes Benz)

154 g/Km (Mercedes Benz)

CO2 emissions WLTP

152 g/Km (BMW)

Emission standard

Euro 6

Safety

Euro NCAP

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