BMW 4 Series Convertible (G23) M440d (340 Hp) Mild Hybrid xDrive Steptronic
People\'s Opinion
N/A / 5
BMW 4 Series:
The BMW 4 Series is a range of compact executive cars manufactured by BMW since 2013. The 4 Series was created when BMW spun off the 2-door models of the 3 Series into a separate series. The 4 Series is currently in its second generation.
The original 4 Series concept car was unveiled in January 2013 at the North American International Auto Show in Detroit, Michigan. Both generations have been produced in the coupé, convertible and 5-door liftback body styles. The 4 series body style is very similar to that of the all electric BMW i4....(Read more on Wikipedia)
Convertible (G23) Overview:
BMW 4 Series (Convertible (G23)). With 700 Nm of torque, it offers ample pulling power. With a weight of 1980 kg, it falls in the mid‑range. All‑wheel drive provides excellent grip, ideal for off‑road use. Acceleration is excellent (0–100 km/h in 5 s). The top speed reaches 250 km/h. A convertible car with a retractable roof, offering open-air driving experiences. Seating for 4 makes it ideal for daily use.
Performance Verdict
Exceptional diesel performance with robust torque delivery and rapid acceleration, complemented by the sure-footed xDrive system.
Fuel Economy
Impressive fuel efficiency for a high-performance diesel, further enhanced by the mild-hybrid technology.
Best Use Case:
Highway cruising, spirited all-weather driving, long-distance touring.
Pros and Cons:
Pros:
- • Stylish and distinctive design with a premium feel
- • Strong and efficient engine lineup, including potent mild-hybrid options
- • High-quality interior with advanced technology and infotainment
- • Engaging driving dynamics and responsive handling
- • Comfortable for a sports convertible, especially on longer journeys
Cons:
- • Premium pricing places it at the higher end of its segment
- • Rear seats are quite cramped, limiting practicality for adults
- • Ride can be firm on larger wheel options, impacting comfort on rough roads
- • Roof mechanism adds weight and complexity compared to a coupe
- • Some competitors offer a slightly softer, more comfort-focused ride
Specifications:
Specifications are compared to those of the previous generation(Gran Coupe (G26): May, 2022 - June, 2024).
| General: |
| Brand: | BMW |
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| Model: | 4 Series |
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| Generation: | Convertible (G23) |
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| Modification (Engine): | M440d (340 Hp) Mild Hybrid xDrive Steptronic |
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| Start of production: | November, 2021 |
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| End of production: | January, 2024 |
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| Powertrain Architecture: | MHEV (Mild Hybrid Electric Vehicle, power-assist hybrid, battery-assisted hybrid vehicles, BAHV) |
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| Body type: | Cabriolet |
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| Seats: | 4 |
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| Doors: | 2 |
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| Engine: |
| Engine systems: | Start & Stop System |
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| Power: | 340 Hp @ 4400 rpm. |
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| Power per litre: | 113.6 Hp/l |
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| Torque: | 700 Nm @ 1750-2250 rpm. |
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| Engine Model/Code: | B57D30B [Same engine] More details about the engine B57D30B |
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| Engine displacement: | 2993 |
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| Number of cylinders: | 6 |
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| Engine configuration: | Inline |
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| Number of valves per cylinder: | 4 |
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| Fuel injection system: | Diesel Commonrail |
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| Engine aspiration: | Twin-power turbo, Intercooler |
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| Valvetrain: | DOHC |
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| Engine oil capacity: | 7 l |
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| Coolant: | 7.7 l |
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| Engine layout: | Front, Longitudinal |
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| Cylinder Bore: | 84 mm mm |
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| Piston Stroke: | 90 mm mm |
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| Compression ratio: | 16.5:1 |
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| Performance: |
| Fuel Type: | Diesel |
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| Combined fuel consumption (WLTP): | 6-6.6 l/100 km |
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| Fuel consumption at Low speed (WLTP): | 10.1-10.6 l/100 km |
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| Fuel consumption at Medium speed (WLTP): | 5.9-6.4 l/100 km |
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| Fuel consumption at high speed (WLTP): | 5-5.5 l/100 km |
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| Fuel consumption at very high speed (WLTP): | 5.4-6.1 l/100 km |
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| Emission standard: | Euro 6d |
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| Acceleration 0 - 100 km/h: | 5 sec |
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| Acceleration 0 - 62 mph: | 5 sec |
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| Maximum speed: | 250 km/h, Electronically limited |
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| Weight-to-power ratio: | 5.8 kg/Hp, 171.7 Hp/tonne |
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| Weight-to-torque ratio: | 2.8 kg/Nm, 353.5 Nm/tonne |
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| Acceleration 0 - 60 mph: | 4.8 sec |
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| Space: |
| Kerb Weight: | 1980 |
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| Max. weight: | 2480 |
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| Max load: | 500 |
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| Trunk (boot) space - maximum: | 385 l |
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| Trunk (boot) space - minimum: | 300 l |
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| Permitted trailer load with brakes (12%): | 1800 kg |
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| Fuel tank capacity: | 59 l |
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| Permitted trailer load without brakes: | 750 kg |
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| Permitted trailer load with brakes (8%): | 1800 kg |
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| Size: |
| Length: | 4768 mm mm [15mm less] |
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| Width: | 1852 mm mm [Same width.] |
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| Height: | 1384 mm mm [58mm less] |
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| Wheelbase: | 2851 mm mm [5mm less] |
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| Width including mirrors: | 2081 mm |
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| Front track: | 1573 mm |
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| Rear (Back) track: | 1612 mm |
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| Front overhang: | 858 mm |
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| Rear overhang: | 1059 mm |
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| Minimum turning circle (turning diameter): | 12 m [above average] |
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| Powertrain: |
| Drivetrain Architecture | The Internal combustion engine (ICE) and the electric motor permanently drive the four wheels of the car with the ability to work only in mixed mode. |
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| Drive wheel | All wheel drive (4x4) |
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| Number of gears | 8 |
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| Transmission type | Automatic |
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| Gearbox type | Steptronic |
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| Front brakes | Ventilated discs [Best for performance and cooling.] |
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| Rear brakes | Ventilated discs [Best for performance and cooling.] |
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| Assisting systems | ABS (Anti-lock braking system) |
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| Steering type | Steering rack and pinion |
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| Power steering | Electric Steering |
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| Tires size | Front wheel tires: 225/45 R18; 225/40 R19 |
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| Wheel rims size | Front wheel rims: 7.5J x 18; 8J x 19 |
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| Front suspension | Spring Strut, Transverse stabilizer |
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| Rear suspension | Independent multi-link spring suspension with stabilizer |
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| Electric: |
| Gross battery capacity: | 0.4 kWh |
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| Battery technology: | Lithium-ion (Li-Ion) |
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| Battery location: | Under the front hood |
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| Electric motor power: | 11 Hp |
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| Electric motor Torque: | 25 Nm |
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| Electric motor location: | Front, Longitudinal |
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| Battery voltage: | 48 V |
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Does the BMW 4 Series live up to the hype? Give us your verdict!