Motoring Today Editorial · Updated 25 Jul 2026 · 8 min read· 2015–2020
The BMW Alpina B4 Convertible (2015 - 2020) is sold in the UK between 2015 and 2020. Engine choices cover petrol power, with automatic gearboxes. Bodystyles run to 4 seats and 2 doors. This review covers what the BMW Alpina B4 Convertible (2015 - 2020) is like to drive and live with, running costs, common faults and reliability, and what to check before you buy a used one. Our reviewers score it 4 out of 5 overall.
The BMW Alpina B4 Convertible (2015 - 2020) is a remarkable blend of luxury, performance, and style. It appeals to those who appreciate the finer things in life while still craving an exhilarating driving experience. With its retro-inspired design and modern technology, it stands out in the competitive luxury convertible market. For buyers seeking a vehicle that offers both sophistication and excitement, the B4 Convertible is a clear recommendation.
Typical monthly payment
£1117/month
Based on PCP · 48 months · £6,700 deposit
Best suited for
Affordability
Premium
Above average monthly commitment.
The BMW Alpina B4 Convertible (2015 - 2020) is a remarkable blend of luxury, performance, and style. It appeals to those who appreciate the finer things in life while still craving an exhilarating driving experience. With its retro-inspired design and modern technology, it stands out in the competitive luxury convertible market. For buyers seeking a vehicle that offers both sophistication and excitement, the B4 Convertible is a clear recommendation.
Best match for
Based on 10,000 miles per year
£173/month
£190/month
£50/month
£60/month
Estimated total
£473/month
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With precise steering and a well-tuned suspension, the handling of the BMW Alpina B4 Convertible is exceptional. It provides a balanced and responsive feel, allowing drivers to tackle corners with confidence. The integration of advanced aerodynamics and lightweight materials enha
Verified spec data
Performance
Power
404–599 bhp
0–60 mph
4.1 s
Fastest in range
Top speed
205 mph
Engine
2,979–4,395 cc
Economy & running
Fuel economy
30.0–37.0 mpg
WLTP combined
CO₂
177–219 g/km
Insurance group
50 of 50
Road tax
£600/yr
Standard VED
Dimensions & practicality
Length
4,640 mm
Width
1,894 mm
Height
1,375 mm
Wheelbase
2,810 mm
Kerb weight
1,840 kg
Seats
4
Doors
2
Figures span the 5 recorded trim variants (2014–2020). Exact figures vary by trim, options and model year — always confirm on the specific car's listing.
External voices
The BMW Alpina B4 Convertible is praised for its luxurious interior, powerful engine options, and smooth ride quality. However, some critics note that it can be pricey compared to rivals and the infotainment system may feel dated. Overall, it’s a refined choice for those seeking a blend of performance and comfort.
Read full reviewThe design of the BMW Alpina B4 Convertible is lauded for its elegant lines and sporty stance, embodying a classic yet modern aesthetic. Critics appreciate the attention to detail and high-quality materials used throughout the cabin. However, some feel the rear visibility could be improved.
Read full reviewThe reliability of the BMW Alpina B4 Convertible is generally considered good, with few reported issues. However, potential buyers should be aware of the higher maintenance costs associated with luxury vehicles. Overall, it’s seen as a dependable choice within its segment.
Ownership intelligence
Finance options for the BMW Alpina B4 Convertible are varied, catering to different buyer preferences. Whether through leasing, hire purchase, or personal contract purchase (PCP), potential owners can find a plan that suits their financial situation. Competitive interest rates and flexible terms make it easier to own this luxury convertible, allowing buyers to enjoy the thrill of driving without the burden of a hefty upfront payment.
Running Costs for the BMW Alpina B4 Convertible are competitive for a luxury vehicle of its calibre. While the initial purchase price may be higher than standard models, the quality and performance justify the investment. Regular maintenance and servicing are essential to keep the vehicle in optimal condition, but the reliability of BMW engineering often results in fewer unexpected repairs. Additionally, the resale value remains strong, making it a wise choice for discerning buyers.
Fuel efficiency is a consideration for the BMW Alpina B4 Convertible, particularly with its powerful engine. While it may not be the most economical option in its class, the exhilarating performance often outweighs the fuel costs for enthusiasts. For the electric variant, charging infrastructure is becoming increasingly accessible, allowing for convenient recharging at home or on the go, making it a practical choice for eco-conscious drivers.
Heritage
2015
Launch of the BMW Alpina B4 Convertible
2018
Introduction of updated features and technology
2020
End of production for the 2015-2020 model range
The purpose of the BMW Alpina B4 Convertible is to provide a luxurious driving experience that combines performance with elegance. It caters to enthusiasts who desire a high-performance convertible without sacrificing comfort and style. The evolution of the BMW Alpina B4 Convertible reflects the brand's commitment to innovation and quality. From its inception, it has incorporated advanced technology and design elements that pay homage to BMW's rich heritage while embracing modern engineering practices.
The BMW Alpina B4 Convertible (2015 - 2020) stands out in its class for its blend of performance, luxury, and exclusivity, competing closely with rivals like the Audi A5, Mercedes-Benz C-Class Cabriolet, and Porsche Boxster.
Audi A5 Convertible
Premium convertible known for its stylish design and advanced technology.
Mercedes-Benz C-Class Cabriolet
Luxury convertible that emphasizes comfort and technology.
Porsche Boxster
Sports convertible that prioritizes performance and driving dynamics.
Available now
Representative trims and engines recorded for this model.
| Trim | Fuel | Power | 0–60 | Economy | CO₂ | Ins. | New price |
|---|---|---|---|---|---|---|---|
| B6 V8 [608] Bi Turbo 2dr Switch-Tronic 2dAutomatic · Rear wheel drive · 2017–2018 | Petrol | 599 bhp | 4.1s | 30 mpg | 219 g/km | 50 | £96,475 |
| S Bi-Turbo Switch-Tronic auto (07/2017 on) 2dAutomatic · Rear wheel drive · 2017–2020 | Petrol | 433 bhp | 4.1s | 35 mpg | 207 g/km | 50 | £62,925 |
| B4 3.0 Bi Turbo 2d Switch-TronicAutomatic · Rear wheel drive · 2014–2017 | Petrol | 404 bhp | 4.1s | 37 mpg | 177 g/km | 50 | £58,615 |
| B4 3.0 Bi Turbo 2d Switch-TronicAutomatic · Rear wheel drive · 2014–2017 | Petrol | 404 bhp | 4.4s | 35 mpg | 186 g/km | 50 | £62,465 |
BMW Alpina B4 Convertible (2015 - 2020) (2015–2020)
From £1117/month
