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BMW 4 Series Convertible · Photo source
BMW · 4 Series
4 Series Convertible
BMW's four-seat soft-top convertible based on the 4 Series Coupé (G23), sold in the UK as the rear-wheel-drive 420i and the six-cylinder M440i xDrive, suited to buyers who want an open-top car with room for four.
- Body
- Convertible
- Powertrain
- Petrol, Mild hybrid
- Power
- 181–386 bhp
- Range
- –
- Boot
- 385 l
What reviewers say
Reviewers agree the 4 Series Convertible is refined, comfortable and engaging to drive, with a classy, well-built cabin and a quick, great-sounding M440i. The common criticisms are the divisive grille, costly options, cramped rear seats and a smaller boot with the roof down; Auto Express found it less sharp than the coupé, and What Car? noted road noise at speed.
From autocar.co.uk, whatcar.com, autoexpress.co.uk and carwow.co.uk
Specifications
Report a wrong or missing specPerformance
- Powertrain
- Petrol, Mild hybrid
- Power
- 181–386 bhp
- 0–62 mph
- 4.8–8.2 s
- Top speed
- 147–155 mph
- Engine or motors
- 420i: 1,998 cc four-cylinder turbo petrol, 135 kW (184 hp); M440i xDrive: 2,998 cc six-cylinder turbo petrol with 48 V mild hybrid, 288 kW (392 hp); bhp converted from BMW's kW figures
- Torque
- 300 Nm (420i), 540 Nm (M440i xDrive)
- Gearbox
- 8-speed automatic
- Drive
- Rear-wheel drive (420i) or all-wheel drive (M440i xDrive)
Range and charging
- Economy (WLTP)
- 39.2–41.5 mpg
- Efficiency
- WLTP combined: 40.9–41.5 mpg (420i), 36.7–39.2 mpg (M440i xDrive)
- CO2 emissions
- 154–158 g/km (420i), 164–175 g/km (M440i xDrive), WLTP combined
Practicality
- Body
- Convertible
- Seats
- 4
- Boot
- 385 litres
- Length
- 4,768 mm
- Width
- 1,852 mm
- Boot
- 385 litres
- Towing
- Up to 1,600 kg braked (420i), 1,800 kg (M440i xDrive)
- Size
- 4,768 mm long (4,770 mm M440i), 1,852 mm wide (2,081 mm with mirrors), 1,384 mm high (1,394 mm M440i); 2,851 mm wheelbase; EC unladen weight including a 75 kg driver is 1,765 kg (420i), 2,000 kg (current M440i xDrive)
Pros and cons
Pros
- Fabric roof with four seats
- M440i xDrive has 392 hp and reaches 62 mph in 4.8 seconds
- Rated to tow up to 1,800 kg braked (M440i xDrive)
Cons
- 385-litre boot
- EC unladen weight reaches 2,000 kg with a driver
- 420i takes 8.2 seconds to reach 62 mph
Closest rivals
Model | Body | Powertrain | Power | Range | Boot | Released |
|---|---|---|---|---|---|---|
| Convertible | Petrol | 523 bhp | – | 385 l | Jul 2021 | |
| Convertible | Mild hybrid, Petrol, Plug-in hybrid | 416–805 bhp | 7 mi | 213 l | 2022 | |
| Convertible | Mild hybrid | 194–375 bhp | – | 385 l | 2024 |
Sources
- bmw.co.uk/en/all-models/4-series/4-series-cabrio/bmw-4-series-convertible-techn…
- bmw.co.uk/en/all-models/4-series/4-series-cabrio/bmw-4-series-convertible.html
- press.bmwgroup.com/united-kingdom/article/detail/T0317958EN_GB/the-new-bmw-4-se…
Photo: images.ctfassets.net
- BMW 420i M Sport Convertible, right side view in Alpine White (UK configuration; optional equipment shown): BMW
- BMW 420i M Sport Convertible, right side view in Arctic Race Blue (UK configuration; optional equipment shown): BMW
- BMW 420i M Sport Convertible, right side view in Black Sapphire (UK configuration; optional equipment shown): BMW
- BMW 420i M Sport Convertible, right side view in Dravit Grey (UK configuration; optional equipment shown): BMW
- BMW 420i M Sport Convertible, right side view in Cape York Green (UK configuration; optional equipment shown): BMW
- BMW 420i M Sport Convertible, interior with Mocha with Night Blue Contrast Stitching Vernasca Leather (UK configuration; optional equipment shown): BMW
- BMW 420i M Sport Convertible, interior with Black Perforated Sensatec (UK configuration; optional equipment shown): BMW
- BMW 420i M Sport Convertible, interior with Tacora Red Sensatec Perforated (UK configuration; optional equipment shown): BMW
- BMW 420i M Sport Convertible, interior with Cognac Perforated Sensatec (UK configuration; optional equipment shown): BMW
- BMW 420i M Sport Convertible, interior with Oyster with Grey contrast stitching Vernasca leather (UK configuration; optional equipment shown): BMW
- BMW 4 Series Convertible, left side view (exact UK model page thumbnail; optional equipment shown): BMW
- BMW 420i M Sport Convertible, passenger dashboard (UK gallery; optional equipment shown): BMW
- BMW 420i M Sport Convertible, navigation on curved display (UK gallery; optional equipment shown): BMW
- BMW 420i M Sport Convertible, climate controls on curved display (UK gallery; optional equipment shown): BMW
- The new BMW M440i Convertible, centre console controls, side view (official press photograph; optional equipment shown): BMW
- The new BMW M440i Convertible, engine cover (official press photograph; optional equipment shown): BMW
- The new BMW M440i Convertible, pale seat cushion upholstery (official press photograph; optional equipment shown): BMW
- The new BMW M440i Convertible, M door sill badge (official press photograph; optional equipment shown): BMW
- The new BMW M440i Convertible, wheel and red brake caliper detail (official press photograph; optional equipment shown): BMW
- The new BMW M440i Convertible, centre console controls, top view (official press photograph; optional equipment shown): BMW
- The all-new BMW 4 Series Convertible, San Remo Green metallic, Rim 19, fabric roof and rear glazing (official press photograph; optional equipment shown): BMW