BMW 4 Series Convertible (G23) M440i (382 Hp) Mild Hybrid Steptronic


Overall Rating

8.6 / 10
Safety 5.0 / 5
Engine 4.8 / 5
Value 3.5 / 5
Performance 4.5 / 5
Comfort 4.0 / 5
People\'s Opinion N/A / 5
Not Rated

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 500 Nm of torque, it offers ample pulling power. It has moderate fuel consumption (~10.2 l/100km). With a weight of 1892 kg, it falls in the mid‑range. Rear‑wheel drive offers dynamic handling and sporty feedback. The top speed reaches 210 km/h. A convertible car with a retractable roof, offering open-air driving experiences. Seating for 4 makes it ideal for daily use.

M440i (382 Hp) Mild Hybrid Steptronic Verdict:

Rating 5 stars

Performance Verdict

Delivers exhilarating performance with a powerful inline-six engine, offering a classic BMW driving experience.

Fuel Economy

Reasonable fuel economy for its power output, though spirited driving will naturally increase consumption.

Best Use Case: Enthusiast driving, weekend car, spirited highway cruising.

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(Coupe (F32, facelift 2017): 2017 - 2020).

General:
Brand:BMW
Model:4 Series
Generation:Convertible (G23)
Modification (Engine):M440i (382 Hp) Mild Hybrid Steptronic
Start of production:2020
End of production:January, 2024
Powertrain Architecture:MHEV (Mild Hybrid Electric Vehicle, power-assist hybrid, battery-assisted hybrid vehicles, BAHV)
Body type:Cabriolet
Seats:4
Doors:2
Engine:
Engine systems:Start & Stop System
Power:382 Hp @ 5800-6500 rpm. Same horsepower
Power per litre:127.4 Hp/l [135mm more]
Torque:500 Nm @ 1800-5000 rpm.
Engine Model/Code:B58B30O1 More details about the engine B58B30O1
Engine displacement:2998
Number of cylinders:6
Engine configuration:Inline
Number of valves per cylinder:4
Fuel injection system:Direct injection
Engine aspiration:Twin-power turbo, Intercooler
Valvetrain:Double-VANOS, VALVETRONIC
Engine oil capacity:6.5 l
Engine layout:Front, Longitudinal
Cylinder Bore:82 mm
Piston Stroke:94.6 mm
Compression ratio:10.2:1
Performance:
Fuel Type:Petrol (Gasoline)
Fuel consumption (economy) - urban:10.2 l/100 km
Fuel consumption (economy) - extra urban:7.6 l/100 km
Fuel consumption (economy) - urban (EPA):10.2 l/100 km
Fuel consumption (economy) - extra urban (EPA):7.6 l/100 km
Fuel consumption (economy) - combined (EPA):9 l/100 km
Fuel consumption (economy) - combined:9 l/100 km
Maximum speed:210 km/h, Electronically limited
Weight-to-power ratio:5 kg/Hp, 201.9 Hp/tonne
Weight-to-torque ratio:3.8 kg/Nm, 264.3 Nm/tonne
Acceleration 0 - 60 mph:5 sec
Space:
Kerb Weight:1892
Max. weight:2300
Max load:408
Trunk (boot) space - maximum:385 l
Trunk (boot) space - minimum:300 l
Fuel tank capacity:59 l
Size:
Length:4775 mm [135mm more]
Width:1852 mm [27mm more]
Height:1387 mm [5mm less]
Wheelbase:2851 mm [41mm more]
Width including mirrors:2081 mm
Front track:1582 mm
Rear (Back) track:1593 mm
Front overhang:863 mm
Rear overhang:1061 mm
Ride height (ground clearance):127 mm
Minimum turning circle (turning diameter):11.4 m [above average]
Powertrain:
Drivetrain ArchitectureThe Internal combustion engine (ICE) and electric motor drive the rear wheels of the car with the ability to work only in mixed mode.
Drive wheelRear wheel drive
Number of gears8
Transmission typeAutomatic
Gearbox typeSteptronic
Front brakesVentilated discs [Best for performance and cooling.]
Rear brakesVentilated discs [Best for performance and cooling.]
Assisting systemsABS (Anti-lock braking system)
Steering typeSteering rack and pinion
Power steeringElectric Steering
Tires sizeFront wheel tires: 225/45 R18; 225/40 R19
Wheel rims sizeFront wheel rims: 7.5J x 18; 8J x 19
Front suspensionSpring Strut, Transverse stabilizer
Rear suspensionIndependent multi-link spring suspension with stabilizer
Electric:
Gross battery capacity:0.4 kWh
Battery technology:Lithium-ion (Li-Ion)
Battery location:Under the front hood
Electric motor power:11 Hp
Electric motor Torque:25 Nm
Electric motor location:Front, Longitudinal
Battery voltage:48 V

Fuel, speed, and comfort: How does the BMW 4 Series rank in your book?