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In-depth review

BMW 4-Series Convertible (2021 onwards) review

Motoring Today Editorial · Updated 24 Jul 2026 · 9 min read· 2021–onwards

The BMW 4-Series Convertible is back, and it’s electrifying! This retro icon has been reborn as a stunning electric vehicle, blending classic charm with cutting-edge technology. If you’re a budget-conscious commuter looking for a stylish ride that doesn’t skimp on performance, read on to discover if this beauty is worth your hard-earned cash.

The BMW 4-Series Convertible (2021 onwards) is a remarkable blend of style, performance, and modern technology. With its stunning design and advanced features, it appeals to those who appreciate luxury and driving pleasure. The introduction of the electric variant further enhances its appeal, making it a forward-thinking choice for buyers. Whether you are looking for a stylish daily driver or a weekend cruiser, the 4-Series Convertible is highly recommended for its exceptional quality and driving experience.

At a glance

187

hp · Power

704

miles · Range / tank

7.4s

0–60 mph

££

Running costs

From £840/mo

Typical finance

Motoring.Today. verdict

Best for

  • Striking design that combines retro and modern elements
  • Powerful engine options with impressive performance
  • Advanced technology and driver assistance features
  • Electric variant offers eco-friendly driving

Consider alternatives if

  • Limited rear seat space
  • Higher price point compared to rivals
  • Boot space is compromised with the roof down

Finance snapshot

Typical monthly payment

£840/month

Based on PCP · 48 months · £5,000 deposit

Best suited for

  • Company Car Drivers
  • Petrol/Diesel Buyers
  • High Mileage Drivers
  • Families

Affordability

Premium

Above average monthly commitment.

Theo's AI summary

The BMW 4-Series Convertible (2021 onwards) is a remarkable blend of style, performance, and modern technology. With its stunning design and advanced features, it appeals to those who appreciate luxury and driving pleasure. The introduction of the electric variant further enhances its appeal, making it a forward-thinking choice for buyers. Whether you are looking for a stylish daily driver or a weekend cruiser, the 4-Series Convertible is highly recommended for its exceptional quality and driving experience.

Best match for

  • Performance enthusiasts
  • Practical families
  • Budget-conscious buyers

Estimated ownership costs

Based on 10,000 miles per year

Fuel

£108/month

Insurance

£148/month

Road Tax

£50/month

Servicing

£60/month

Estimated total

£366/month

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With its rear-wheel-drive layout and advanced suspension system, the BMW 4-Series Convertible delivers exceptional handling capabilities. The steering is responsive and precise, allowing for confident cornering and a connected feel to the road. Whether navigating tight bends or c

Verified spec data

Specifications

Performance

Power

181–543 bhp

0–60 mph

3.3 s

Fastest in range

Top speed

191 mph

Engine

1,995–2,998 cc

Economy & running

Fuel economy

27.4–60.1 mpg

WLTP combined

Miles per £

7.7 mpp

CO₂

122–232 g/km

Insurance group

29–49 of 50

Road tax

£600/yr

Standard VED

Dimensions & practicality

Length

4,768 mm

Width

2,081 mm

Height

1,390 mm

Wheelbase

2,851 mm

Kerb weight

1,705 kg

Seats

4

Doors

2

Euro NCAP safety

5/5 · 2019

Safety assist

72%

Figures span the 135 recorded trim variants (2015–2024). Exact figures vary by trim, options and model year — always confirm on the specific car's listing.

Check this 4-Series before you buy

External voices

What the experts say

Parkers

The BMW 4-Series Convertible impresses with its stylish design and engaging driving experience. Owners appreciate the luxurious interior and advanced technology, though some note limited rear space and a high price tag. Overall, it’s a strong contender in the premium convertible market.

Read full review
Autocar

The design of the BMW 4-Series Convertible is striking, with a bold front grille and sleek silhouette. Reviewers praise its premium feel and attention to detail, although some find the rear visibility compromised. Overall, it stands out in the luxury convertible segment.

Read full review
WhatCar

The BMW 4-Series Convertible is generally reliable, with a solid build quality and good performance. However, some owners report issues with electronics and infotainment systems. It’s advisable to check for any warranty extensions when considering a used model.

Ownership intelligence

The real cost of owning one

Finance & affordability

Finance options for the BMW 4-Series Convertible are flexible, with various leasing and purchasing plans available to suit different budgets. Potential buyers can explore competitive interest rates and tailored packages that make owning this luxury convertible more accessible.

Day-to-day running costs

Running Costs for the BMW 4-Series Convertible are competitive within its class, especially considering the blend of performance and luxury it offers. Regular maintenance and servicing are essential to keep the vehicle in top condition, but the overall reliability of BMW vehicles helps to mitigate unexpected expenses.

Charging & fuel

For the petrol variants, fuel efficiency is commendable, allowing for longer journeys without frequent stops. The electric variant, on the other hand, offers the advantage of lower running costs through reduced charging expenses, making it an attractive option for eco-conscious drivers.

Heritage

Milestones & history

  1. 2021

    Launch of the BMW 4-Series Convertible

  2. 2022

    Introduction of the electric variant

  3. 2023

    Enhanced technology features and updates

Read full launch story

The BMW 4-Series Convertible was designed to provide a luxurious open-top driving experience, combining performance with style. Since its inception, the 4-Series has evolved from a traditional coupe to a modern convertible, incorporating advanced technology and sustainable options while paying homage to BMW's rich heritage.

Compare with alternatives

The BMW 4-Series Convertible (2021 onwards) stands out in its class for its blend of sporty performance, luxury, and technology, competing closely with rivals like the Audi A5, Mercedes-Benz C-Class Cabriolet, and Porsche 718 Boxster.

Audi A5 Convertible

Reference only

Premium compact convertible known for its stylish design and advanced technology.

vs features
The Audi A5 Convertible offers a refined driving experience with a luxurious interior, advanced infotainment system, and high-quality materials, comparable to the BMW 4-Series but with a slightly more understated design.
vs price
The A5 Convertible is generally priced similarly to the BMW 4-Series, often slightly higher depending on the trim and options chosen.
No Motoring.Today review

Mercedes-Benz C-Class Cabriolet

Reference only

Luxury compact convertible that emphasizes comfort and technology.

vs features
The C-Class Cabriolet is known for its plush ride and high-end interior, offering a more comfort-oriented experience compared to the sportier BMW 4-Series, but it may lack some of the driving engagement.
vs price
Typically, the C-Class Cabriolet is priced similarly to the BMW 4-Series, but higher trims can exceed the BMW's pricing.
No Motoring.Today review

Porsche 718 Boxster

Reference only

High-performance sports convertible that focuses on driving dynamics.

vs features
The 718 Boxster excels in driving performance and handling, offering a more engaging experience than the BMW 4-Series, but it comes with a more minimalist interior and less tech features.
vs price
The 718 Boxster is generally more expensive than the BMW 4-Series, reflecting its performance-oriented nature and brand prestige.
No Motoring.Today review

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BMW 4-Series Convertible (2021 onwards) for sale on Motoring.Today

BMW 4-Series Convertible (2021 onwards) trim & engine line-up

Representative trims and engines recorded for this model.

TrimFuelPower0–60EconomyCO₂Ins.New price
M4 CS xDrive 550 2dr Step AutoAutomatic · 4 wheel drive · 2024–NowPetrol543 bhp3.3s27.7 mpg232 g/km47£120,345
M4 xDrive 530 Competition M 2dr Step AutoAutomatic · 4 wheel drive · 2024–NowPetrol522 bhp3.4s28 - 28.2 mpg227 g/km43£87,495
M4 CSL 2dr Step AutoAutomatic · Rear wheel drive · 2022–2023Petrol543 bhp3.6s28.2 - 28.5 mpg224 g/km49£126,805
M4 xDrive Competition M 2dr Step Auto [M Carbon]Automatic · 4 wheel drive · 2021–2024Petrol502 bhp3.4s28 - 28.2 mpg228 g/km42£91,535
M440i xDrive MHT 5dr Step AutoAutomatic · 4 wheel drive · 2021–NowPetrol368 bhp4.5s32.5 - 34 mpg187 g/km39£61,545
M440d xDrive MHT 2dr Step AutoAutomatic · 4 wheel drive · 2021–2022Diesel335 bhp4.5s47.1 - 47.9 mpg154 g/km42£56,465
M440d xDrive MHT 2dr Step AutoAutomatic · 4 wheel drive · 2021–2022Diesel335 bhp4.8s44.8 - 45.6 mpg162 g/km45£61,465
430d MHT M Sport 2dr Step AutoAutomatic · Rear wheel drive · 2021–2022Diesel281 bhp5.6s50.4 - 52.3 mpg141 g/km43£53,510
430d MHT M Sport Pro Edition 2dr Step AutoAutomatic · Rear wheel drive · 2021–2022Diesel281 bhp5.6s49.6 - 50.4 mpg146 g/km44£58,010
430d xDrive MHT M Sport 2dr Step AutoAutomatic · 4 wheel drive · 2021–2022Diesel281 bhp4.9s50.4 - 52.3 mpg140 g/km40£49,980
430i [245] M Sport 2dr Step AutoAutomatic · Rear wheel drive · 2021–2022Petrol241 bhp5.7s40.4 - 42.2 mpg153 g/km34£46,500
430i M Sport 5dr Step AutoAutomatic · Rear wheel drive · 2021–2022Petrol241 bhp6s37.7 - 40.4 mpg160 g/km34£47,495

Specs by trim

M440i xDrive MHT 2dr Step AutoPetrol Automatic · 2020–Now
Power
368 bhp
0–60 mph
4.7 s
Top speed
155 mph
Torque
500 Nm
Economy
32.1 - 34.4 mpg
Range
416 mi
CO₂
184 g/km
Insurance group
42
Road tax
£600
New price
£67,410
420d MHT M Sport 2dr Step AutoDiesel Automatic · 2020–2022
Power
187 bhp
0–60 mph
7.4 s
Top speed
147 mph
Torque
400 Nm
Economy
54.3 - 57.6 mpg
Range
704 mi
CO₂
129 g/km
Insurance group
36
Road tax
£600
New price
£50,330
420d MHT M Sport 2dr Step Auto [Tech Pack]Diesel Automatic · 2020–2022
Power
187 bhp
0–60 mph
7.4 s
Top speed
147 mph
Torque
400 Nm
Economy
54.3 - 57.6 mpg
Range
704 mi
CO₂
129 g/km
Insurance group
36
Road tax
£600
New price
£53,130
420d MHT M Sport 2dr Step Auto [Pro Pack]Diesel Automatic · 2020–2022
Power
187 bhp
0–60 mph
7.4 s
Top speed
147 mph
Torque
400 Nm
Economy
54.3 - 57.6 mpg
Range
704 mi
CO₂
129 g/km
Insurance group
36
Road tax
£600
New price
£52,630
420d MHT M Sport 2dr Step Auto [Tech/Pro Pack]Diesel Automatic · 2020–2022
Power
187 bhp
0–60 mph
7.4 s
Top speed
147 mph
Torque
400 Nm
Economy
54.3 - 57.6 mpg
Range
704 mi
CO₂
129 g/km
Insurance group
36
Road tax
£600
New price
£55,430
420i M Sport 2dr Step AutoPetrol Automatic · 2020–Now
Power
181 bhp
0–60 mph
7.9 s
Top speed
147 mph
Torque
300 Nm
Economy
38.2 - 41.5 mpg
Range
495 mi
CO₂
155 g/km
Insurance group
32
Road tax
£600
New price
£51,280

+ 31 more trim variants

FAQs

What makes the BMW 4-Series Convertible a luxury convertible?
The BMW 4-Series Convertible combines stunning design, advanced technology, and high-quality interiors, offering a premium open-top driving experience that prioritises both performance and comfort.
How does the electric variant of the 4-Series Convertible perform?
The electric variant delivers impressive performance with instant torque, smooth acceleration, and a commendable range, making it an exciting choice for eco-conscious drivers.
What are the key driving dynamics of the BMW 4-Series Convertible?
The 4-Series Convertible features agile handling, responsive steering, and a well-tuned suspension, providing an exhilarating driving experience on various terrains, from city streets to B-roads.
How does the BMW 4-Series Convertible address sustainability?
The transition to an electric powertrain in the 4-Series Convertible reflects BMW's commitment to sustainability, offering lower running costs and reduced emissions without compromising luxury.
What is the history of the BMW 4-Series Convertible?
Since its launch in 2021, the 4-Series Convertible has evolved from a petrol-powered vehicle to an electric marvel, enhancing design and technology to meet modern consumer preferences.

BMW 4-Series Convertible (2021 onwards) (2021–onwards)

From £840/month