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BMW 4 Series 420i 2.0 AT Luxury Cabrio Equipment — First Generation Restyling

The BMW 4 Series 420i 2.0 AT Luxury Cabrio is a convertible built for open-air drives and everyday use.

1 generation, restyling · Cabrio

2017–2020

420i 2.0 AT

Gasoline · Automatic · RWD

At a glance

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Luxury Cabrio

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Specifications

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Performance & powertrain

Top speed
?

The highest speed a vehicle can sustain under manufacturer test conditions. Some cars are electronically limited below their mechanical potential. Glossary entry

230 km/h
Engine type
Gasoline
Transmission
Automatic
Type of boost
?

A turbocharger or supercharger compresses the air entering the engine so a smaller engine can produce more power. Naturally aspirated engines draw air without a compressor. Glossary entry

Turbo
Type of drive
?

Which wheels receive power: front-wheel drive, rear-wheel drive or all-wheel drive. All-wheel drive can send power to every wheel for extra traction. Glossary entry

RWD
Bore and stroke
?

The diameter of a cylinder (bore) and the distance the piston travels inside it (stroke). Together they determine the displacement of the engine. Glossary entry

82 × 94.6 mm
Engine capacity
?

The total volume swept by all pistons inside the cylinders, usually stated in cubic centimetres or litres. Larger displacement often means more power but higher consumption. Glossary entry

1998 cm³
Engine location
Front, longitudinal
Number of gears
?

How many fixed forward ratios a gearbox offers. More gears can improve economy and refinement; continuously variable transmissions have no fixed steps. Glossary entry

8
Maximum power
?

A unit of engine or motor output. One metric horsepower is about 0.735 kilowatts. Peak power is normally reached at high engine speed. Glossary entry

184 hp
Maximum power, kw
?

A unit of engine or motor output. One metric horsepower is about 0.735 kilowatts. Peak power is normally reached at high engine speed. Glossary entry

135 kW
Compression ratio
?

The ratio between the largest and smallest volume of a cylinder as the piston moves. Higher ratios improve efficiency but may require higher-octane fuel. Glossary entry

11
Maximum power rpm
5000 rpm
Maximum torque N⋅m
270 N⋅m
Maximum torque rpm
1350 – 4600 rpm
Acceleration to 100
?

The time a vehicle needs to reach 100 km/h from a standstill, a common shorthand for overall performance. Glossary entry

8.4 s
Engine power system
Direct injection (direct)
Number of cylinders
4
Valves per cylinder
?

The number of intake and exhaust valves in each cylinder. Four valves per cylinder is common and helps the engine breathe at higher speeds. Glossary entry

4
Cylinder arrangement
Inline
Maximum power ICE
Not provided
Maximum power ICE
Not provided

Energy & emissions

ECO class
Euro 6
Battery power
Not provided
Fuel grade
95
Mild Hybrid
?

A car with a small electric motor and battery that assist the combustion engine and recover braking energy but cannot drive on electricity alone. Glossary entry

Not provided
Battery type
Not provided
CO2 emissions
?

The amount of carbon dioxide released per kilometre under a standardised test. Lower figures usually go hand in hand with lower fuel consumption. Glossary entry

136 g/km
Full charge home
Not provided
Power consumption
Not provided
Fuel tank capacity
57 l
Full public charging time
Not provided
Driving range, maximum
?

The distance an electric or plug-in vehicle can travel on a full charge under a stated test cycle. Temperature, speed and load change the real result. Glossary entry

Not provided
Driving range, minimum
?

The distance an electric or plug-in vehicle can travel on a full charge under a stated test cycle. Temperature, speed and load change the real result. Glossary entry

Not provided
Fuel consumption city
7.6 l
Average consumption
5.8 l
Fuel consumption highway
4.8 l

Dimensions & body

Doors number
2
Number of seats
4
Width
1825 mm
Height
1384 mm
Length
4638 mm
Body type
Cabrio
Wheelbase
?

The distance between the centres of the front and rear wheels. A longer wheelbase usually gives more cabin space and a calmer ride; a shorter one helps agility and parking. Glossary entry

2810 mm
U-turn diameter
Not provided
Depth of the ford to be crossed
Not provided
Body style
Drop-top
Rear track width
?

The distance between the centres of the two wheels on the same axle. A wider track generally improves stability in corners. Glossary entry

1594 mm
Trunk volume max
370 l
Trunk volume min
220 l
Front track width
?

The distance between the centres of the two wheels on the same axle. A wider track generally improves stability in corners. Glossary entry

1545 mm
Max weight
2185 kg
Curb weight
?

The weight of the vehicle with all standard equipment and fluids but without passengers or cargo. Glossary entry

1715 kg
Ground clearance, maximum
?

The gap between the lowest point of the underbody and the road. More clearance helps on rough roads and steep driveway ramps. Glossary entry

Not provided
Ground clearance, minimum
?

The gap between the lowest point of the underbody and the road. More clearance helps on rough roads and steep driveway ramps. Glossary entry

130 mm

Identity & configuration

Body code
F33
Vehicle class
D
Body designation
F33
Right-hand drive
No
Engine code
N20B20B

Additional specifications

Stop
2020-10-31
Start
2017-01-01
Wheel size
Not provided
Rear brakes
Ventilated disc
Front brakes
Ventilated disc
Rear suspension
Independent, spring
Front suspension
Independent, spring

Trim equipment

Dimensions & body

Number of seats
4

Additional specifications

Driver Assistance Systems
Anti-lock braking system (ABS), Electronic stability program (ESP), Emergency brake assist (BAS, EBD, EBA), Automatic slip regulation (ASR), Collision avoidance system, Lane departure warning system, Drive mode selection system
Stop
2020-10-31
View
Daytime running lights, Adaptive front-lighting system, Fog lamp, High beam assist
Start
2017-01-01
Airbags
Driver's airbag, Passenger airbag, Side front airbags
Isofix
Isofix for the front row seats
Material
Alloy
Comfort
On-board computer, Keyless entry system, Engine Start Button, Start-stop system, Power folding mirrors, Power mirrors, Multifunction steering wheel, Paddle Shifters, Folding mirrors
Interior
Decorative interior lighting, Leather steering wheel, Sunroof, Panoramic roof, Power window
Safety
Tire pressure sensors
Headlights
LED headlights
Sound
Audio system
Diameter
R18 ″
Multimedia
AUX, USB, Bluetooth, Navigation system, Smartphone control
Cruise control
Adaptive Cruise Control
Parking assist system
Rear parking sensors
Power steering
Active power steering
Air conditioner
Dual-zone climate control
Seat position memory
Front seats with memory function
Anti theft system
Keyless central locking
Seat trim
Artificial leather seats
Power seat adjustment
Front seat adjustment

Not provided means the source has no value. Zero remains zero. Units are shown as supplied; range test cycles are only stated when known.

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Estimates use only the figures you enter, in your own currency. No live fuel prices or emissions data are used.

Units

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Comfort and Convenience

Seat comfort is highly personal because body shapes and support needs vary, making a position that feels right for one person less ideal for another. Simple adjustments can help different drivers find a pleasant seating posture.

Safety and Driver Assistance

Being familiar with basic controls like lights, wipers, and mirrors before setting off reduces distraction and allows smoother reaction to road conditions. A quick check before driving helps build confidence without relying on advanced systems.

Multimedia and Connectivity

During a trip, keeping a phone charged and accessible is useful, but reaching for a cable or port can be a distraction. If wireless charging is available, placing the phone on a pad can simplify the routine.